Scientific bibliography of Carl Djerassi

 

1946

1.         The Preparation and Partial Aromatization of 1, 4-Cho1estadienone-3 by the Dienone-Pheno1 Rearrangement.

J. A. C. S., 68, 1712 (1946).
by A. L. Wilds and C. Djerassi.

2.         The Dienone-Pheno1 Rearrangement Applied to Chrysene Derivatives. The Synthesis of 3-Hydroxy-1-methy1-chrysene and Related Compounds.

J. A. C. S., 68, 1715 (1946).
by A. L. Wilds and C. Djerassi.

3.         The Preparation of 5-Methoxybenzene-1,2,3-tri-carboxylic Acid.

J. A. C. S., 68, 1862 (1946).
by A. L. Wilds and C. Djerassi.

4.         The Synthesis of Estradiol and 1-Methy1estradio1 from Cholesterol.

J. A. C. S., 68, 2125 (1946).
by A. L. Wilds and C. Djerassi.

5.         Heterocyclic Amines with Antihistaminic Activity.

J. A. C. S., 68, 1999 (1946).

by C. P. Huttrer, C. Djerassi, W. L. Beears, R. L. Mayer and C. R. Scholz.

 

 

 1947

6.         The Ultraviolet Absorption Spectra of α,β-Un-saturated Ketones Conjugated with an Aromatic Nucleus.

J. A. C. S., 69, 1985 (1947).

by A. L. Wilds, L. W. Beck, W. J. Close, C. Djerassi, J. A. Johnson, Jr., T. L. Johnson and C. H. Shunk.

7.         Aryloxyacetamidines and 2-(Aryloxymethyl)-imidazolines.

J. A. C. S., 69, 1688 (1947).
by C. Djerassi and C. R. Scholz.

8.         The Bromination of Saturated 3-Ketosteroids with N-Bromo-Imides.

Experientia, 3, 107 (1947).

by C. Djerassi and C. R. Scholz.

9.         The Bromination of 3-Ketosteroids in Acetic Acid and the Effect of Trace Substances in the Solvent.

J. A. C. S., 69, 2404 (1947).
by C. Djerassi and C. R. Scholz.

10.       The Method of Molecular Rotation Differences Applied to 3-Ketosteroids of the Allo Series.

J. Org. Chem., 12, 823 (1947).
by C. Djerassi.

 

1948

11.       Brominations with Pyridine Hydrobromide Perbromide.

J. A. C. S., 70, 417 (1948).

by C. Djerassi and C. R. Scholz.

12.       The Preparation and Dienone-Pheno1 Rearrangement of 2-Bromo-1,4-androstadien-17-o1-3-one 17-Hexahydrobenzoate.

J. A. C. S., 70, 1911 (1948).
by C. Djerassi and C. R. Scholz.

13.       Identification of Crystalline Progesterone with 2,4-Dinitrophenylhydrazine.

Anal. Chem., 20, 880 (1948).
by C. Djerassi.

14.       5-Methy1doisyno1ic Acid and 1-Methy1estrone.

J. Org. Chem., 13, 697 (1948).
by C. Djerassi and C. R. Scholz.

15.       2-(Benzhydryloxymethy1) Imidazo1ine. A New Histamine Antagonist.

J. Org. Chem., 13, 830 (1948).
by C. Djerassi and C. R. Scholz.

16.       The Su1fonation of Some Polycyclic Ketones.

J. Org. Chem., 13, 848 (1948).
by C. Djerassi.

17.       Brominations with N-Bromosuccinimide and Related Compounds. The Wohl-Zieg1er Reaction.

Chem. Rev., 43, 271 (1948).
by C. Djerassi.

 

1949

 

18.       The Ultraviolet Absorption Spectra of Steroidal Dinitropheny1hydrazones.

J. A. C. S., 71, 1000 (1949).
by C. Djerassi and E. Ryan.

19.       The Scope and Mechanism of the Reaction of Dini-trophenylhydrazine with Steroidal Bromo Ketones.

J. A. C. S., 71, 1003 (1949).
by C. Djerassi.

20.       Δ1-Desoxycorticosterone Acetate.

Experientia, 5, 204 (1949).

by C. Djerassi, C. R. Scholz and J. H. Leathem.

21.       The Wohl-Zieg1er Bromination of Enol Acetates of 20-Keto Steroids.

J. Org. Chem., 14, 660 (1949).
by C. Djerassi and C. R. Scholz.

22.       The Preparation of Two Aromatic Analogs of Desoxycorticosterone Acetate.

J. A. C. S., 71, 3962 (1949).
by C. Djerassi and C. R. Scholz.

 

1950

23.       2-(Aryloxymethyl)Thiazolines and Penthiazolines.

J. Org. Chem., 15, 694 (1950).
by C. Djerassi and C. R. Scholz.

24.       2-Substituted-4-(2-Dialkylaminoethyl)Thiazoles.

J. Org. Chem., 15, 700 (1950).

by C. Dierassi, R. H. Mizzoni and C. R. Scholz.

25.       Preparation and Derivatives of N-Substituted Glycinonitriles.

J. A. C. S., 72, 3081 (1950).
by R. A. Turner and C. Djerassi.

26.       Steroids II. A Method for the Conversion of Allosteroids into Δ4-3-Ketosteroids.

J. A. C. S., 72, 1046 (1950).

by G. Rosenkranz, S. Kaufmann, J. Pataki and C. Djerassi.

27.       Steroids III. Bromination of Certain Keto-steroids and a Partial Synthesis of Estradiol, Estrone and Equilenin.

Nature, 165, 814 (1950).

G. Rosenkranz, C. Djerassi, S. Kaufmann, J. Pataki and J. Romo.

28.       Steroids IV. α-Iodoketones. A Method for the Conversion of Allosteroids into Δ4-3-Ketosteroids.

J. A. C. S., 72, 4077 (1950).

by G. Rosenkranz, O. Mancera, J. Gatica and C. Djerassi.

29.       Steroids V. The Synthesis of Adrenal Cortico-steroids and Analogs from Allopregnan-3β-ol-20-one.

J. A. C. S., 72, 4081 (1950).

by G. Rosenkranz, J. Pataki, S. Kaufmann, J. Berlin and C. Djerassi.

30.       Steroids VI. The Wohl-Ziegler Bromination of Steroidal 1,4-dien-3-ones. Partial Synthesis of Δ6-Dehydroestrone and Equilenin.

J. A. C. S., 72, 4531 (1950).

by S. Kaufmann; J. Pataki, G. Rosenkranz, J. Romo and C. Djerassi.

31.       Steroids VII. Contribution to the Bromination of Δ4-3-Ketosteroids and a New Partial Synthesis of the Natural Estrogens.

J. A. C. S., 72, 4534 (1950).

by C. Djerassi, G. Rosenkranz, J. Romo, S. Kaufmann and J. pataki.

32.       Steroids VIII. The Dienone-Phenol Rearrangement in the Steroid Series. Synthesis of a New Class of Estrogens.

J. A. C. S., 72, 4540 (1950).

by C. Djerassi, G. Rosenkranz, J. Romo, J. pataki and S. Kaufmann.

33.       Steroidal Sapogenins IV. Nomenclature of the Steroidal Sapogenins.

Nature, 166, 104 (1950).

by G. Rosenkranz and C. Djerassi.

34.       Steroids IX. The Dienone-Phenol Rearrangement in the Cholesterol Series.

J. Org. Chem., 15, 896 (1950).

by J. Romo, C. Djerassi and G. Rosenkranz.

35.       Steroids XI. l7-Ethynylandrostan-17β-ol and Androstane-2,17-dione.

J. A. C. S., 72, 5750 (1950).

by C. Djerassi, R. Yashin and G. Rosenkranz.

 

1951

 

36.       Steroids XV. The Bromination of 3-Ketosteroids of the Normal Series.

Experientia, 7, 93 (1951).

by C. Djerassi and G. Rosenkranz.

37.       Steroids XIV. Studies in the 3,6-Dihydroxypreg-nane Series.

J. Org. Chem., 16, 192 (1951).

by O. Mancera, G. Rosenkranz and C. Djerassi.

38.       Steroidal Sapogenins VI. Synthesis of Δ7-22-Isoallospirosten-3β-ol and Unsaturated Analogs.

J. Org. Chem., 16, 298 (1951).

by G. Rosenkranz, J. Romo, E. Batres and C. Djerassi.

39.       Steroidal Sapogenins VII. Experiments in the Hecogenin Series (part 1).

J. Org. Chem., 16, 303 (1951).

by C. Djerassi, H. Martinez and G. Rosenkranz.

40.       Steroids X. Aromatization Experiments in the Cholesterol Series.

J. Org. Chem., 15, 1289 (1951).

by J. Romo, G. Rosenkranz and C. Djerassi.

41.       Steroids XVII. A Steroidal Cyc1opropyl Ketone.

J. A. C. S., 73, 2383 (1951).

by A. Sandoval, G. Rosenkranz and C. Djerassi.

42.       Steroids XII. Aromatization Experiments in the Progesterone Series.

J. A. C. S., 73, 1523 (1951).

by C. Djerassi, G. Rosenkranz, J. Iriarte, J. Berlin and J. Romo.

43.       Steroids XIII. Reaction of α,β-Unsaturated Steroid Ketones with Benzylmercaptan. Thioeno1 Ether Formation and 1,4-Addition.

J. A. C. S., 73, 1528 (1951).

by J. Romo, M. Romero, C. Djerassi and G. Rosenkranz.

44.       The Dienone-Pheno1 Rearrangement.

J. A. C. S., 73, 990 (1951).

by A. Sandoval, L. Miramontes, G. Rosenkranz and C. Djerassi.

45.       Steroidal Sapogenins VIII. Steroids XVIII. Synthesis of Δ7,9(11)-A11opregnadien-3β-ol-20-one from Diosgenin and from Δ5-Pregnen-3β-ol-20-one.

J. Org. Chem., 16, 754 (1951).

by C. Djerassi, J. Romo and G. Rosenkranz.

46.       The Synthesis of 1-Ethyl-2,5-Dimethyl-8-Methoxyphenanthrene.

J. Org. Chem., 16, 899 (1951).

by J. Jerran, O. Mancera, G. Rosenkranz and C. Djerassi.

47.       The Effect of Bromine Substitution upon the Ul-traviolet Absorption Spectra of α,β-Unsaturated Ketones.

J. A. C. S., 73, 3263 (1951).

by A. L. Nussbaum, O. Mancera, R. Daniels, G. Rosenkranz and C. Djerassi.

48.       Steroids XXII. The Synthesis of 19-Norprogeste-rone.

J. A. C. S., 73, 3540 (1951).

by L. Miramontes, G. Rosenkranz and C. Djerassi.

49.       Steroids XXIV. Introduction of the 11-Keto and 11α-Hydroxy Groups into Ring C Unsubstituted Steroids.

J. A. C. S., 73, 3546 (1951).

by G. Stork, J. Romo, G. Rosenkranz and C. Djerassi.

50.       Steroids XXV. Synthesis of Cortisone.

J. A. C. S., 73, 4055 (1951).

by G. Rosenkranz, J. Pataki and C. Djerassi.

51.       Steroids XXVI. Cortical Hormones from A11oste-roids: Synthesis of Cortisone from Reichstein's Compound D.

Nature, 168, 28 (1951).

by G. Rosenkranz, C. Djerassi, R. Yashin and J. Pataki. 

52.       Steroida1 Sapogenins IX. Oxidation of Δ5,16,20(22)-Furostatriene-3β,26-diol.

J. A. C. S., 73, 3820 (1951).

by A. Sandoval, J. Romo, G. Rosenkranz, S. Kaufmann and C. Djerassi.

53.       Steroidal Sapogenins XI. Experiments in the Hecogenin Series (part 2).

J. Org. Chem., 16, 1278 (1951).

by C. Djerassi, H. Martinez and G. Rosenkranz.

54.       Steroids XXVIII. Introduction of the 11-Keto and 11α-Hydroxy Groups into Ring C Unsubstituted Steroids (part 2).

J. A. C. S., 73, 4496 (1951).

by C. Djerassi, O. Mancera, G. Stork and G. Rosenkranz.

55.       Steroidal Sapogenins X. Unsaturated 22-Isospirosten-3-ones.

J. A. C. S., 73, 4654 (1951).

by R. Yashin, G. Rosenkranz and C. Djerassi.

56.       Steroids XX. Cyclic Steroidal Hemithioketa1s.

J. A. C. S., 73, 4961 (1951).

by J. Romo, G. Rosenkranz and C. Djerassi.

57.       Steroidal Sapogenins XII. The Configuration of the Hydroxyl Groups in Kammogenin, Yuccagenin, Li1agenin and Gitogenin.

J. A. C. S., ll., 5375 (1951).

58.       Steroids XXI. Δ7-Androstene-3β,17β-diol.

J. A. C. S., 73, 5478 (1951).

by F. Neumann, G. Rosenkranz, J. Romo and C. Djerassi.

59.       Steroids XXIII. Δ7,9(11)-Allopregnadiene-3β,20β-dio1 and Related Compounds.

J. A. C. S., 73, 5489 (1951).

by J. Romo, G. Rosenkranz and C. Djerassi.

60.       Steroidal Sapogenins XV. Experiments in the Hecogenin Series (part 3). Conversion to Cortisone.

J. A. C. S., 73, 5513 (1951).

by C. Djerassi, H. J. Ringold and G. Rosenkranz.

61.       Steroidal Sapogenins XIV. Δ4,6-22-Isospirostadien-3β-ol and Δ2,4,6-22-Isospirostatriene.

J. Org. Chem., 16, 1873 (1951).

by J. Romo, H. J. Ringold, G. Rosenkranz and C. Djerassi.

 

1952

62.       Steroidal Sapogenins XIII. Δ8(9)-22-Isospirosten-3α-ol.

J. A. C. S., 74, 422 (1952).

by C. Djerassi, R. Yashin and G. Rosenkranz.

63.       Steroids XXVII. Synthesis of A11opregnane-3β, 11β,17α,20β,21-Pento1 from Cortisone and Diosgenin.

J. Biol. Chem., 194, 115 (1952).

by C. Djerassi, G. Rosenkranz, J. Pataki and S. Kaufmann.

64.       Steroids XXIX. Synthesis of 11β-Hydroxyprogesterone.

J. Org. Chem., 17, 290 (1952).

by G. Rosenkranz, J. Pataki and C. Djerassi.

65.       Steroidal Sapogenins XVI. Introduction of the 11-Keto and 11α-Hydroxy Groups into Ring C Unsubstituted Steroids (part 3). 11-Oxygenated Sapogenins.

J. A. C. S., 74, 1712 (1952).

by C. Djerassi, E. Batres, M. Velasco and G. Rosenkranz.

66.       Steroidal Sapogenins XVII. 22-Isoallospirost-8(14)-en-3β-ol and 3β-Hydroxya11opregn-8(14)-en-20-one.

J. Chem. Soc., 1021 (1952).

by 0 Mancera, D. H. R. Barton, G. Rosenkranz and C. Djerassi.

67.       Steroidal Sapogenins XVIII. Experiments in the 5,6-Dihydrokryptogenin Series.

J. Org. Chem., 11, 426 (1952).

by A. L. Nussbaum, A. Sandoval, G. Rosenkranz and C. Djerassi.

68.       Steroids XXXI. Introduction of the 11-keto and 11α-Hydroxy Groups into Ring C Unsubstituted Steroids (part 4). Saturated 7, 11-Diones.

J. A. C. S., 74, 2918 (1952).

by J. Romo, G. Stork, G. Rosenkranz and C. Djerassi.

69.       Steroids XXXII. Introduction of the 11-Keto and 11α-Hydroxy Groups into Ring C Unsubstituted Steroids (part 5). Δ8-7-Ketones.

J. A. C. S., 74, 3321 (1952).

by C. Djerassi, O. Mancera, M. Velasco, G. Stork and G. Rosenkranz.

70.       Steroids XXXIII.  Δ7-Allopregnene-3β,17α-diol-20-one and Related Compounds.

J. A. C. S., 74, 3436 (1952).

by J. Pataki, G. Rosenkranz and C. Djerassi.

71.       Steroidal Sapogenins XIX. Sodium Borohydride Reduction of 3-Acetoxy-Δ3,5,7-22-Isospirostatriene and 3-Acetoxy-Δ3,5,7,9(11)-22-Isospirostatetraene.

J. A. C. S., 74, 3441 (1952).

by H. J. Ringold, G. Rosenkranz and C. Djerassi.

72.       Steroidal Sapogenins XX. Synthesis and Reactions of the Epimeric Δ5-22-Isospirosten-3β,7-diols.

J. A. C. S., 74, 3318 (1952).

by H. J. Ringold, G. Rosenkranz and C. Djerassi.

73.       Steroidal Sapogenins XXII. Steroids XXXIV. Degradation of 11-0xygenated Sapogenins. Synthesis of Allopregnane-3β,11β-diol-20-one and Allopregnane-3β,11α-diol-20-one.

J. A. C. S., 74, 3634 (1952).

by C. Djerassi, E. Batres, J. Romo and G. Rosenkranz.

74.       Steroids XXXIX. Synthesis of Δ4-Pregnene-11α,17α,21-triol-3,20-dione, the 11-epimer of Kendall's Compound F.

Chem. & Ind., 783 (1952).

by J. Romo, A. Zaffaroni, J. Hendrichs, G. Rosenkranz, C. Djerassi and F. Sondheimer.

75.       Steroidal Sapogenins XXI. Identification by the Absorption Spectra of their Sulfuric Acid Chromogens.

J. Org. Chem., 17, 747 (1952).

by G. Diaz, A. Zaffaroni, G. Rosenkranz and C. Djerassi.

76.       Steroidal Sapogenins XXIII. Introduction of the 11-Keto and 11α-Hydroxy Groups into Ring C Unsubstituted Steroids (part 6). New Approach to 11-Oxygenated Steroids.

J. A. C. S., 74, 2696 (1952).

by F. Sondheimer, R. Yashin, G. Rosenkranz and C. Djerassi.

77.       Steroids XXXV. Synthesis of llα-Hydroxyprogesterone.

J. Org. Chem., 17, 1066 (1952).

by O. Mancera, J. Romo, F. Sondheimer, G. Rosenkranz and C. Djerassi.

78.       Steroids XXXVII. A Ten Step Conversion of Progesterone to Cortisone.

J. A. C. S., 74, 3711 (1952).

by O. Mancera, A. Zaffaroni, B. A. Rubin, F. Sondheimer, G. Rosenkranz and C. Djerassi.

79.       Steroids XXXVIII. Synthesis of Allopregnane-3,11,20-trione-17α,21-diol (Dihydroallocortisone) from Allopregnan-3β-ol-11,20-dione.

J. A. C. S., 74, 5615 (1952).

by J. Pataki, G. Rosenkranz and C. Djerassi.

80.       Steroids XXX. Partial Synthesis of Allopregnane-3β,11β,21-triol-20-one and Allopregnane-3β,11β,17α,21-tetrol-20-one.

J. Biol. Chem., 195, 751 (1952).

by J. Pataki, G. Rosenkranz and C. Djerassi.

81.       Steroids XXXVI. Desu1furization Experiments in the 7-Ketopregnane Series.

J. Org. Chem., 17, 1413 (1952).

by J. Romo, G. Rosenkranz and C. Djerassi.

1953

82.       Steroidal Sapogenins XXV. Experiments in the Hecogenin Series (part 4). Degradation of 22α-5α-Spirostane-3β,12β-diol-11-one.

J. A. C. S., 75, 239 (1953).

by H. Martinez, H. J. Ringold, G. Rosenkranz and C. Djerassi.

83.       Steroidal Sapogenins XXIV. Synthesis and Side Chain Degradation of Δ7-22a-Spirosten-3β-ol.

J. Org. Chem., 18, 92 (1953).

by M. Velasco, J. Rivera, G. Rosenkranz, F. Sondheimer and C. Djerassi.

84.       Steroids XLI. Synthesis of 11α,17α-Dihydroxy-progesterone and of 11α,17α,21-Trihydroxyprogesterone, the 11-epimer of Kendall's Compound F.

J. A. C. S., 75, 1277 (1953).

by J. Romo, G. Rosenkranz, C. Djerassi and F. Sondheimer.

85.       Steroids XLII. Steroidal Sapogenins XXVI. The Chemical Reduction of Δ8-11-Keto and of Saturated 11-Keto Steroids. A New Approach to 11-Keto and 11α-Hydroxy Steroids.

J. A. C. S., 75, 1282 (1953).

by F. Sondheimer, O. Mancera, G. Rosenkranz and C. Djerassi.

86.       Steroids XLIII. A Ten Step Conversion of Progesterone to Cortisone. The Differential Reduction of Pregnane-3,20-diones with Sodium Borohydride.

J. A. C. S., 75, 1286 (1953).

by O. Mancera, H. J. Ringold, C. Djerassi, G. Rosenkranz and F. Sondheimer.

87.       The Dehydration of a Steroidal Δ8-11α-Hydroxy-7-Ketone.

J. A. C. S., 75, 1745 (1953).

by A. J. Lemin, G. Rosenkranz and C. Djerassi.

88.       Terpenoids I. The Triterpenes of the Cactus Lemaireocereus Thurberi.

J. A. C. S., 75, 2254 (1953).

by C. Djerassi, L. E. Geller and A. J. Lemin.

89.       Steroids XLIV. Synthesis of Δ4-Pregnene-11α,21-diol-3,20-dione Diacetate, the 11-Epimer of Corticosterone Acetate.

J. A. C. S., 75, 2601 (1953).

by F. Sondheimer, G. Rosenkranz, O. Mancera and C. Djerassi.

90.       Synthesis and Reactions of Chlorinated 3-Keto-steroids.

J. A. C. S., 75, 3500 (1953).

by J. J. Beereboom, C. Djerassi, D. Ginsburg and L. F. Fieser.

91.       α-Iodoketones (part 2). Reaction of Enol Acetates with N-Iodosuccinimide.

J. A. C. S., 75, 3493 (1953).
by C. Djerassi and C. T. Lenk.

92.       Steroidal Sapogenins XXVII. The Stereochemistry of the Catalytic Hydrogenation of Δ8-11-Keto Steroids.  Synthesis of 8-Iso and 14-Iso-11- Keto Sapogenins.

J. A. C. S., 75, 3496 (1953).

by C. Djerassi, W. Frick, G. Rosenkranz and F. Sondheimer.

93.       Steroids XLV. Introduction of the 11-Keto and 11α-Hydroxy Groups into Ring C Unsubstituted Steroids (part 8).  Performic Acid Oxidation of 7,9(11)-dienes.

J. A. C. S., 75, 3505 (1953).

by C. Djerassi, O. Mancera, J. Romo and G. Rosenkranz.

94.       Alkaloid Studies I.  The Isolation of Pilocereine from the Cactus Lophocereus schottii.

J. A. C. S., 75, 3632 (1953).

by C. Djerassi, N. Frick and L. E. Geller.

95.       Studies in Organic Sulfur Compounds V. Synthesis of 21-Thio1acetates of Adrenal Cortical Hormones.

J. A. C. S., 75, 3700 (1953).

by C. Djerassri and A. L. Nussbaum.

96.       Studies in Organic Sulfur Compounds VI. Cyclic Ethylene and Trimethylene Hemithioketals.

J. A. C. S., 75, 3704 (1953).
by C. Djerassri and M. Gorman.

97.       Steroidal Sapogenins XXVIII. The Reaction of Peracids with Enol Acetates of Δ8-7-Keto and Δ8-11-Keto Steroidal Sapogenins.

J. A. C. S., 75, 4428 (1953).

by O. Mancera, L. Miramontes, G. Rosenkranz, F. Sondheimer and C. Djerassi.

98.       Steroids XLVIII. 19-Norprogesterone, A Potent Progestational Hormone.

J. A. C. S., 75, 4440 (1953).

by C. Djerassi, L. Miramontes and G. Rosenkranz.

99.       Steroidal Sapogenins XXIX. Experiments in the Hecogenin Series (part 5). 22a-5β-Spirostan-3α-ol-12-one.

J. A. C. S., 75, 4885 (1953).

by C. Djerassi, A. J. Lemin, H. Martinez, G. Rosenkranz and F. Sondheimer.

100.     Oxidations with Ruthenium Tetroxide.

J. A. C. S., 75, 3838 (1953).
by C. Djerassi and R. R. Engle.

101.     Steroids XLIX. 19-Nor-Desoxycorticosterone, A Potent Mineralocorticoid Hormone.

J. A. C. S., 75, 4117 (1953).

by A. Sandoval, L. Miramontes, G. Rosenkranz, C. Djerassi and F. Sondheimer.

102.     Steroidal Sapogenins XXX. Synthesis and Side Chain Degradation of 22a-5β-Spirostan-3α-ol-11-one Acetate.

J. A. C. S., 75, 4430 (1953).

by G. Rosenkranz, M. Velasco, C. Djerassi and F. Sondheimer.

103.     Terpenoids II.  Experiments in the Cafestol Series.

J. Org. Chem., 18, 1449 (1953).

by C. Djerassi, E. Wilfred, L. Visco and A. J. Lemin.

 

104.     Terpenoids III. The Isolation of Erythrodiol, Oleanolic Acid and a New Triterpene Triol, Longispinogenin from the Cactus Lemaireocereus longispinus.

J. A. C. S., 75, 5940 (1953).

by C. Djerassi, R. M. McDonald and A. J. Lemin.

105.     Alkaloid Studies II.  Isolation of Reserpine and Narcotine from Rauwolfia Heterophylla.

J. A. C. S., 75, 5446 (1953).

by C. Djerassi, M. Gorman, A. L. Nussbaum and J. Reynoso.

106.     Synthesis of Cortisone and Related Steroids.

Vitamins and Hormones (Academic Press), 11, 205 (1953).
by C. Djerassi.

107.     Synthesis of 11-Oxygenated Steroids from Plant Sources.

Recent Progress in Hormone Research (Academic Press), 8, 1 (1953).

by G. Rosenkranz, F. Sondheimer, O. Mancera, J. Pataki, H. J. Ringold, J. Romo, C. Djerassi and G. Stork.

108.     Synthesis of 11-Oxygenated Steroids from Steroidal Sapogenins.

Ciba Foundation Colloquia on Endocrinology (Churchill, Ltd.), 7, 79-95 (1953).

by C. Djerassi and G. Rosenkranz.

 

1954

109.     Terpenoids IV. The Structures of the Cactus Triterpenes Gummosogenin and Longispinogenin.

Chem. & Ind., 161 (1954).

by C. Djerassi, L. E. Geller and A. J. Lemin.

110.     The Dienone-Phenol Rearrangement in the Benzo (c)-phenanthrene Series. A Case of Concurrent Methyl and Methylene Migration.

J. A. C. S., 76, 1741 (1954).

by C. Djerassi and T. T. Grossnickle.

111.     α-Iodoketones (part 3). Synthesis of 21-Iodo-Δ16-20-keto Steroids by the N-Iodosuccinimide-Enol Acetate Reaction.

J. A. C. S., 76, 1722 (1954).
by C. Djerassri and C. T. Lenk.

112.     Terpenoids V. The Isolation of Iresin, A New Sesquiterpene Lactone.

J. A. C. S., 76, 2966 (1954).

by C. Djerassi, P. Sengupta, J. Herran and F. Walls.

113.     Terpenoids VI. Dumortierigenin, A New Triterpene Lactone from the Cactus Lemaireocereus dumortieri.

J. A. C. S., 76, 2969 (1954).

by C. Djerassi, E. Farkas, A. J. Lemin, J. C. Collins and F. Walls.

114.     Terpenoids VII. Experiments in the Glycyrrhetic Acid Series.

J. A. C. S., 76, 4085 (1954).
by C. Djerassi and C. M. Foltz.

115.     Terpenoids VIII. The Structures of the Cactus Triterpenes Gummosogenin and Longispinogenin.

J. A. C. S., 76, 4089 (1954).

by C. Djerassi, L. E. Geller and A. J. Lemin.

116.     Steroids LIV. Synthesis of 19-Nor-17α-Ethynyltestosterone and 19-Nor-17α-Methyl-testosterone.

J. A. C. S., 76, 4092 (1954).

by C. Djerassi, L. Miramontes, G. Rosenkranz and F. Sondheimer.

 

117.     Steroidal Sapogenins XXXVII. Experiments in the Hecogenin Series (part 6). Conversion to Cortisone.

J. A. C. S., 76, 5533 (1954).

by C. Djerassi, H. J. Ringold and G. Rosenkranz.

118.     Steroidal Sapogenins XXXIV. Introduction of the 11-oxo- and the 11α-Hydroxy Group into Ring C Unsubstituted Steroids (part 9). The Epoxides of Δ7,9(11)-5α-Hydroxy Sapogenins.

J. Chem. Soc., 2346 (1954).

by C. Djerassi, A. J. Lemin, G. Rosenkranz and F. Sondheimer.

119.     Synthesis and Reactions of Mixed Bromo-chloro 3-Ketosteroids.

J. Org. Chem., 19, 1196 (1954).

by J. J. Beereboom and C. Djerassi.

120.     Lead Tetraacetate Oxidation of Steroidal Glycols. Some Observations on Quabagenin.

J. Org. Chem., 19, 1351 (1954).
by C. Dierassi and R. Ehrlich.

121.     Alkaloid Studies III.  Isolation of Pilocereine and Anhalonidine from Four Cactus Species.

J. A. C. S., 76, 3215 (1954).

by C. Djerassi, C. R. Smith, S. P. Marfey, R. N. McDonald, A. J. Lemin, S. K. Figdor and H. Estrada.

122.     Alkaloid Studies IV. The Isolation of Reserpine, Serpentine and Ajmaline from Rauwolfia Heterophylla.

J. A. C. S., 76, 4463 (1954).

by C. Djerassi, M. Gorman, A. L. Nussbaum and J. Reynoso.

123.     The Reaction of α-Halo Ketones with 2-Pyridinethiol.

J. A. C. S., 76, 4470 (1954).
by C. Djerassi and G. R. Pettit.

 

124.     The Constitution of Digitogenin.

Chem. & Ind., 728 (1954).

by C. Djerassi and T. T. Grossnickle.

125.     The Constitution and Stereochemistry of Samogenin, Markogenin and Mexogenin.

Chern. & Ind., 1320 (1954).

by C. Djerassi, J. Fishman, J. A. Moore.

126.     Steroids LV. Steroidal Sapogenins XXXV.  Chemical Introduction of the 6β-Hydroxy Group into Steroidal Δ4-3-Ketones by a Two Step Sequence.

J. Org. Chem., 19, 1509 (1954).

by J. Romo, G. Rosenkranz, C. Djerassi and F. Sondheimer.

127.     The Conversion of Diosgenin to Cortisone via 11-Ketosteroids of the 5β-Series.

J. A. C. S., 76, 5672 (1954).
by A. J. Lemin and C. Djerassi.

128.     Terpenoids XV. The Constitution of Iresin.  A New Fundamental Sesquiterpene Skeleton.

J. A. C. S., 76, 6410 (1954).

by C. Djerassi, W. Ritte1, A. L. Nussbaum, F. W. Donovan and J. Herran.

129.     Terpenoids IX. The Constitution of Machaeric Acid.

Chem. & Ind., 960 (1954).

by C. Djerassi and A. E. Lippman.

130.     Terpenoids X.  The Triterpenes of the Cactus Lemaireocereus hystrix.

J. A. C. S., 76, 5780 (1954).

by C. Djerassi and A. E. Lippman.

131.     The Stereochemical Course of the Reduction of a 14β-Δ8-11-0xo Steroid.

Chem. & Ind., 1228 (1954).

by C. Djerassi and G. H. Thomas.

132.     Steroids LXIII. Synthesis of Δ4-19-Norpregnene-11β,17β,21-triol-3,20-dione (19-Norhydrocortisone) and related 19-Noradrena1 Hormones.

J. A. C. S., 76, 6210 (1954).

by A. Zaffaroni, H. J. Ringold, G. Rosenkranz, F. Sondheimer, G. H. Thomas and C. Djerassi.

133.     Terpenoids XII.  The Constitution of the Cactus Triterpene Cochalic Acid.

Chem. & Ind., 1354 (1954).

by C. Djerassi and G. H. Thomas.

134.     Alkaloid Studies VI.  Cuauchichicine, A New Diterpenoid Alkaloid.

J. A. C. S., 76, 5889 (1954).

by C. Djerassi, C. R. Smith, S. K. Figdor, J. Herran and J. Romo.

 

 

1955

135.     Terpenoids XI. Investigation of Nine Cactus Species. Isolation of TWo New Triterpenes, Stellatogenin and Machaeric Acid.

J. A. C. S., 77, 1200 (1955).

by C. Djerassi, L. H. Liu, E. Farkas, A. E. Lippman, A. J. Lemin, L. E. Geller, R. N. McDonald and B. J. Taylor.

136.     Terpenoids XIII. The Structures of the Cactus Triterpenes Machaeric Acid and Machaerinic Acid.

J. A. C. S., 77, 1825 (1955).

by C. Djerassi and A. E. Lippman.

137.     Terpenoids XIV. The Stereochemistry of Sumaresinolic Acid and Its Conversion to Oleanolic Acid.

Helv. Chim. Acta, 38, 1304 (1955).
by C. Djerassi, G. H. Thomas and O. Jeger.

138.     Studies in Organic Sulfur Compounds VII. Lithium Aluminum Hydride Reduction of Xanthates to Mercaptans. Synthesis of Substituted β-Mercaptoethanols.

J. A. C. S., 77, 568 (1955).

by C. Djerassi, M. Gorman, F. X. Markley and E. B. Oldenburg.

139.     Steroids LXI. Synthesis of 19-Nor-desoxy-corticosterone, A Potent Mineralocorticoid Hormone.

J. A. C. S., 77, 148 (1955).

by A. Sandoval, G. H. Thomas, C. Djerassi, G. Rosenkranz and F. Sondheimer.

140.     Alkaloid Studies V. Synthesis of 1-Isopropyl and 1-Isobutyl-2-methyl-6,7-dimethoxy-l,2,3,4-tetrahydroisoquinoline.

J. A. C. S., 77, 484 (1955).

by C. Djerassi, J. J. Beereboom, S. P. Marfey and S. K. Figdor.

141.     The Stereochemistry of Digitogenin.

Chem. & Ind., 473 (1955).

by C. Djerassi, T. T. Grossnickle and L. B.

High.

142.     The Configuration of the Hydroxyl Groups in Gitogenin.

Chem. & Ind., 474 (1955).

by C. Djerassi, L. B. High, T. T. Gross-nickle, R. Ehrlich, J. A. Moore and R. B. Scott.

143.     Terpenoids XVI. The Constitution of the Cactus Triterpene Cocha1ic Acid.  Partial Reductions of Methyl Diketoechinocystate.

J. A. C. S., 77, 3579 (1955).

by C. Djerassi, G. H. Thomas and H. Monsimer.

 

144.     α-Iodoketones (part 4).  The Reaction of N-Iodosuccinimide with Enol Acetates of Δ4-3-Ketosteroids.

J. A. C. S., 77, 3826 (1955).

by C. Djerassi, J. Grossman and G. H. Thomas.

145.     Constitution and Stereochemistry of Samogenin, Markogenin and Mexogenin.

J. A. C. S., 77, 4291 (1955).
by C. Djerassi and J. Fishman.

146.     Optical Rotatory Dispersion Studies I. The Androstane Series.

J. A. C. S., 77, 4354 (1955).

by C. Djerassi, E. W. Foltz and A. E. Lippman.

147.     Optical Rotatory Dispersion Studies II. Steroid Hormones.

J. A. C. S., 77, 4359 (1955).

by E. W. Fo1tz, A. E. Lippman and C. Djerassi.

148.     Optical Rotatory Dispersion Studies III. The Cho1estane Series.

J. A. C. S., 77, 4364 (1955).

by A. E. Lippman, E. W. Foltz and C. Djerassi.

149.     Terpenoids XVII. The Cactus Triterpenes Thurberogenin and Stellatogenin.

J. A. C. S., 77, 5330 (1955).

by C. Djerassi, E. Farkas, L. H. Liu and G. H. Thomas.

150.     Studies in Organic Sulfur Compounds VIII. Introduction of Oxygen in the Raney Nickel Desulfurization of Hemithioketals (l,3-Oxathiolanes).

J. A. C. S., 77, 4647 (1955).

by C. Djerassi, M. Gorman and J. A. Henry.

151.     Alkaloid Studies VII. Tetraphyllin and Tetraphyllicine, Two New Alkaloids from Rauwolfia Tetraphylla.

Chem. & Ind., 627 (1955).

by C. Djerassi and J. Fishman.

152.     Correlation of Digitogenin with Progesterone.

J. A. C. S., 77, 3673 (1955).

by C. Djerassi, L. B. High, J. Fried and E. F. Sabo.

153.     Hydroxylation of Desoxycorticosterone with Neurospora crassa.

J. A. C. S., 77, 3926 (1955).

by D. Stone, M. Hayano, R. I. Dorfman, O. Hechter, C. H. Robinson and C. Djerassi.

154.     Terpenoids XIX. The Pentacyclic Skeleton of Cafestol.

J. Org. Chem., 20, 1046 (1955).

by C. Djerassi, H. Bendas and P. Sengupta.

 

 

 

155.     Alkaloid Studies VIII. The Structures of the Diterpenoid Alkaloids Laurifoline and Cuauchichicine.

J. A. C. S., 77, 4801 (1955).

by C. Djerassi, C. R. Smith, A. E. Lippman, S. K. Figdor and J. Herran.

l55a. The Structures of the Diterpenoid Alkaloids Laurifoline and Cuauchichicine.  Nomenclature Alteration.

J. A. C. S., 77, 6633 (1955).

by C. Djerassi, C. R. Smith, A. E. Lippman, S. K. Figdor and J. Herran.

156.     Terpenoids XVIII. Saponin from Ladino Clover (Trifolium repens).

J. A. C. S., 77, 4936 (1955).

by E. D. Walter, E. M. Bickoff, C. R. Thompson, C. H. Robinson and C. Djerassi.

157.     The Conversion of Androstane-3,17-dione to Androsterone.

J. A. C. S., 77, 4925 (1955).

by C. Djerassi, A. J. Manson and M. Gorman.

158.     Terpenoids XX. Constitution of Cafestol.

Chem. & Ind., 1481 (1955).
by H. Bendas and C. Djerassi.

159.     Terpenoids XXI. The Constitution of the Cactus Triterpene Queretaroic Acid.

Chem. & Ind., 1520 (1955).

by C. Djerassi, J. A. Henry, A. J. Lemin and T. Rios.

160.     Alkaloid Studies IX. Rauwolfia Alkaloids IV.  Isolation of Reserpine and other Alkaloids from Rauwolfia sellowii Muell. Argov.

J. A. C. S., 77, 6687 (1955).

by S. C. Pakrashi, C. Djerassi, R. Wasicky and N. Neuss.

 

1956

161.     Optical Rotatory Dispersion Studies  IV. Steroidal Sapogenins.

J. A. C. S., 78, 440 (1956).
by C. Djerassi and R. Ehrlich.

162.     Alkaloid Studies  X. Alkaloids of Two Brazilian Apocynaceae:  Rauwolfia Grandiflora Mart. and Lochnera (Vinca) Rosea (L.) Reichb. Var. Alba (Sweet) Hubbd.

Chem. & Ind., 173 (1956).

by W. B. Mors, P. Zaltzman, J. J. Beereboom, S. C. pakrashi and C. Djerassi.

163.     Alkaloid Studies XI. The Structures of Tetraphyllicine, Ajmalidine and Rauvomitine.

J. A. C. S., 78, 1259 (1956).

by C. Djerassi, M. Gorman, S. C. Pakrashi and R. B. Woodward.

 

164.     Methymycin. Reduction and Oxidation Studies.

J. A. C. S., 78, 1729 (1956).

by C. Djerassi; A. Bowers and H. N. Khastgir.

165.     The Partial Structure of Methymycin.

J. A. C. S., 78, 1733 (1956).

by C. Djerassi, A. Bowers, R. Hodges and B. Riniker.

166.     8-Isoprogesterone.

J. Org. Chem., 21, 490 (1956).

by C. Djerassi, A. J. Manson and A. Segaloff.

167.     Steroids LXXXI. Transformation of Sapogenins to Androgegs and Estrogens. Beckmann Rearrangement of Δl-20-Ketosteroids.

J. Org. Chem., 21, 520 (1956).

by G. Rosenkranz, O. Mancera, F. Sondheimer and C. Djerassi.

168.     Optical Rotatory Dispersion Studies  V. Effect of Isolated Carbonyl Groups and Double Bonds in the Cholestane Series.

J. A. C. S., 78, 3163 (1956).

by C. Djerassi, W. Closson and A. E. Lippman.

169.     Optical Rotatory Dispersion Studies  VI. The Bile Acid Series. Polycarbonyl Compounds and Stereochemical Differentiations.

J. A. C. S., 78, 3761 (1956).
by C. Djerassi and W. Closson.

170.     Optical Rotatory Dispersion Studies  VII. Application to Problems of Absolute Configurations.

J. A. C. S., 78, 6362 (1956).

by C. Djerassi, R. Riniker and B. Riniker.

171.     Alkaloid Studies  XII. Synthesis of Substituted 1-Isobutyl-2-methyl-1,2,3,4-tetrahydro-isoquinolines.

J. Org. Chem., 21, 975 (1956).

by C. Djerassi, F. X. Markley and R. Ehrlich.

172.     Alkaloid Studies XIII.  Isolation of Quebrachamine and of a New Dihydroindole Alkaloid, Spegazzinine, from Aspidosperma chakensis Spegazzini.

J. Org. Chem., 21, 979 (1956).

by O. O. Orazi, R. A. Corral, J. S. E. Holker and C. Djerassi.

173.     1-Methyl-19-norprogesterone and 1-Methyl-19-nor-17α-hydroxyprogesterone.

J. A. C. S., 78, 2479 (1956).

by C. Djerassi, A. E. Lippman and J. Grossman.

174.     An Unusual Cyclization in the Naphthalene Series.  Synthesis of 1-Ethylanthracene and of 4-Ethylphenanthrene.

J. A. C. S., 78, 2474 (1956).
by C. Djerassi and H. Bendas.

175.     The Constitution and Stereochemistry of Digitogenin.

J. A. C. S., 78, 3166 (1956).

by C. Djerassi, T. T. Grossnickle and L. B. High.

176.     The Structure of the Antibiotic Methymycin.

J. A. C. S., 78, 2907 (1956).
by C. Djerassi and J. A. Zderic. 

177.     Terpenoids XXII. Triterpenes from Some Mexican and South American Plants.

J. A. C. S., 78, 2312 (1956).

by C. Djerassi, A. Bowers, S. Burstein, H. Estrada, J. Grossman, J. Herran, A. J. Lemin, A. Manjarrez and S. C. Pakrashi.

178.     Terpenoids XXIII. Interconversion of Thurberogenin and Betu1inic Acid.

J. A. C. S., 78, 3534 (1956).
by C. Djerassi and R. Hodges.

179.     Terpenoids XXIV. The Structure of the Cactus Triterpene Queretaroic Acid.

J. A. C. S, 78, 3783 (1956).

by C. Djerassi, J. A. Henry, A. J. Lemin, T. Rios and G. H. Thomas.

180.     Terpenoids XXV. The Structure of the Cactus Triterpene Dumortierigenin.

J. A. C. S., 78, 5685 (1956).

by C. Djerassi, C. H. Robinson and D. B. Thomas.

181.     Alkaloid Studies XIV. The Structure of the Cactus Alkaloid Pi1ocereine.

J. A. C. S., 78, 3861 (1956).

by C. Djerassi, S. K. Figdor, J. M. Bobbitt and F. X. Markley.

182.     Optical Rotatory Dispersion Studies VIII. α,β-Unsaturated Ketones and Solvent Effects.

J. A. C. S., 78, 6377 (1956).

by C. Djerassi, R. Riniker and B. Riniker.

183.     Optical Rotatory Dispersion Studies IX. Intermediates in the Total Synthesis of Steroids.  Allotment of Absolute Configuration by Rotatory Dispersion Measurements.

Chem. & Ind., 988 (1956).
by C. Djerassi and W. K1yne.

184.     8-Isotestosterone.

J. Org. Chem., 21, 1056 (1956).

by C. Djerassi, H. Bendas and A. Sega1off.

185.     The Structure of the Antibiotic Methymycin.

J. A. C. S., 78, 6390 (1956).

by C. Djerassi and J. A. Zderic.

 

 

186.     The Direct Conversion of Steroidal Δ5-3β-Alcohols to Δ5- and Δ4-3-Ketones.

J. Org. Chern., 21, 1547 (1956).

by C. Djerassi, R. R. Engle and A. Bowers.

187.     Alkaloid Studies XV. Casimiroedine.

J. Org. Chem., 21, 1510 (1956).

by C. Djerassi, J. Herran, H. N. Khastgir, B. Riniker and J. Romo.

 

1957

188.     Alkaloid Studies XVI. Alkaloids of Rauwolfia tetraphylla L. The Structure of Tetraphylline and Tetraphyllicine.

J. A. C. S., 79, 1217 (1957).

by C. Djerassi, J. Fishman, M. Gorman, J. P. Kutney and C. Pakrashi.

189. Terpenoids XXVI.  Cactus Triterpenes.

Chapter in "Festschrift Arthur Stoll" (pp. 330 - 352) Birkhäuser, Basel, 1957.

by C. Djerassi.

190.     Alkaloid Studies XVII. The Structure of the Cactus Alkaloid Pilocereine.

J. A. C. S., 79, 2203 (1957).

by C. Djerassi, S. K. Figdor, J. M. Bobbitt and F. X. Markley.

191.     Optical Rotatory Dispersion Studies X. Determination of Absolute Configuration of α-Halo-cyclohexanones.

J. A. C. S., 79, 1506 (1957).
by C. Djerassi and W. Klyne.

192.     The Structure of the Antibiotic Neomethymycin.

J. A. C. S., 79, 2022 (1957).
by C. Djerassi and O. Halpern.

193.     Studies in Organic Sulfur Compounds IX. Preparation and Desulfurization of Optically Active 1,1-Diphenyl-3-mercaptopropan-2-ol.

J. A. C. S., 79, 2553 (1957).
by C. Djerassi and J. Grossman.

194.     The Synthesis of 8-Isoprogesterone and 8-Isotestosterone.

Tetrahedron, 1, 22 (1957).

by C. DjerassI, A. J. Manson and H. Bendas.

195.     Terpenoids XXVII. The Structure of the Cactus Triterpene Myrtillogenic Acid.

J. A. C. S., 79, 2901 (1957).

by C. Djerassi and H. G. Monsimer.

196.     Terpenoids XXVIII. The Triterpene Composition of the Genus Myrtillocactus.

J. A. C. S., 79, 3525 (1957).

by C. Djerassi, S. Burstein, H. Estrada, A. J. Lemin, A. E. Lippman, A. Manjarrez and H. G. Monsimer.

197.     Terpenoids XXIX. Iresin (part 2).  A New Fundamental Sesquiterpene Skeleton.

J. A. C. S., 79, 3528 (1957).
by C. Djerassi and W. Rittel.

198.     Steric Requirements in the Cyclization of Naphthalene Derivatives.

J. Org. Chem., 22, 393 (1957).
by C. Djerassi and G. R. Pettit.

199.     Optical Rotatory Dispersion Studies XI.  Structure et Dispersion Rotatoire.

Bull. Soc. Chim. France, 741 (1957).
by C. Djerassi.

200.     The Synthesis of Some 14-Iso-11-Ketosteroids. Stereochemical Course of Chemical and Catalytic Reduction of a 14β-Δ8-11-Ketosteroid.

J. A. C. S., 79, 3835 (1957).
by C. Djerassi and G. H. Thomas.

201.     Recording and Nomenclature of Optical Rotatory Dispersion.

Proc. Chem. Soc., 55 (1957). by C. Djerassi and W. Klyne.

202.     Macrolide Antibiotics VI. A Standard of Absolute Configuration Among Macrolide Antibiotics.

J. A. C. S., 79, 3926 (1957).
by C. Djerassi and O. Halpern.

203.     Optical Rotatory Dispersion Studies XII.  Absolute Configuration of Eperuic and Labdanolic Acids.

Tetrahedron, 1, 238 (1957).

by C. Djerassi and D. Marshall.

204.     Alkaloid Studies XVIII.  The Chemistry of Rosewood.  Isolation and Structure of Anibine and 4-Methoxyparacotoin.

J. A. C. S., 79, 4507 (1957).

by W. B. Mors, O. R. Gottlieb and C. Djerassi.

205.     Terpenoids XXX.  The Structure of the Cactus Triterpene Chichipegenin.

J. A. C. S., 79, 4468 (1957).

by A. Sandoval, A. Manjarrez, P. R. Leeming, G. H. Thomas and C. Dierassi.

206.     Terpenoids XXXI.  The Structure and Stereochemistry of Medicagenic Acid.

J. A. C. S., 79, 5292 (1957).

by C. Djerassi, D. B. Thomas, A. L. Livingston and C. R. Thompson.

207.     Optical Rotatory Dispersion Studies XIII. Assignment of Absolute Configuration to Certain Members of the Guaiano1ide Series of Sesquiterpenes.

J. Org. Chem., 22, 1361 (1957).

by C. Djerassi, J. Osiecki and W. Herz.

208.     Application of Optical Rotatory Dispersion Studies to Structural and Stereochemical Problems in Organic Chemistry.

Abstracts of the Fifteenth National Organic Chemistry Symposium, Rochester, June 1957, pp. 12 - 20.

by C. Djerassi.

209.     Alkaloid Studies XIX.  Alkaloids of Some Hawaiian Rauwolfia Species. The Structure of Sandwicine and its Interconversion with Ajmaline and Ajmalidine.

Tetrahedron, 1, 328 (1957).

by M. Gorman, N. Neuss, C. Djerassi, J. P. Kutney and P. J. Scheuer.

 

1958

210.     Terpenoids XXXII. The Structure of the Cactus Triterpene Treleasegenic Acid.  Ring Conformational Alterations in a Pentacyclic Triterpene.

J. A. C. S., 80, 1236 (1958).
by C. Djerassi and J. S. Mills.

211.     Optical Rotatory Dispersion Studies XIV. α-Haloketones (part 2).

J. A. C. S., 80, 1216 (1958).

by C. Djerassi, J. Osiecki, R. Riniker and B. Riniker.

212.     Alkaloid Studies XX.  Isolation and Structure of Two New Cactus Alkaloids, Piloceredine and Lophocerine.

Tetrahedron, 2, 58 (1958).

by C. Djerassi, T. Nakano and J. M. Bobbitt.

213.     The Structure of the Cactus Sterol Lophenol.  A Link in Sterol Biogenesis.

J. A. C. S., 80, 1005 (1958).

by C. Djerassi, J. S. Mills and R. Villotti.

214.     Recent Advances in the Chemistry of Steroid Transformation.

Abstract, First National Medicinal Chemistry Symposium, June 25, 1958, pp. l3a - l3i.
by C. Djerassi.

215.     Optical Rotatory Dispersion Studies XV.  Steroidal Ketols and Cardiac Aglycones.

Helv. Chim. Acta, 41, 250(1958).

by C. Djerassi, O. Halpern, V. Halpern, O. Schindler and C. Tamm.

216.     Terpenoids XXXIII.  The Structure and Probable Absolute Configuration of Cafestol.

J. A. C. S., 80, 247 (1958).

by C. Djerassi, M. Cais and L. A. Mitscher.

217.     On the Absolute Configuration of the Antibiotic Actidione.

J. A. C. S., 80, 1261 (1958).

by E. J. Eisenbraun, J. Osiecki and C. Djerassi.

 

218.     Über die Konfiguration des 19-nor-10,14β,17α-Progesterons.

Ann., 612, 93 (1958).

by C. Djerassi, M. Ehrenstein and G. W. Barber.

219.     Terpenoids XXXIV. Iresin (part 3).  Reactions of the Glycol System.

J. A. C. S., 80, 1972 (1958).

by C. Djerassi, F. W. Donovan, S. Burstein and R. Mauli.

220.     Steroids XCI.  Microbiological Oxidations of 19-Norprogesterone.

Tetrahedron, 2, 165 (1958).

by A. Bowers, C. Casas Campillo and C. Djerassi.

221.     Alkaloid Studies XXI.  Partial Structure of Casimiroedine.

Tetrahedron, 2, 167 (1958).

by C. Djerassi, C. Bankiewicz, A. L. Kapoor and B. Riniker.

222.     Steroids XCVI. The Synthesis of Equilin.

J. A. C. S., 80, 2596 (1958).

by J. A. Zderic, A. Bowers, H. Carpio and C. Djerassi.

223.     Terpenoids XXXV.  The Structure and Absolute Configuration of Iresin.

J. A. C. S., 80, 2593 (1958).
by C. Djerassi and S. Burstein.

224.     Naturally Occurring Oxygen Heterocyclics  II. Characterization of an Insecticidal Principle from Mammea americana L.

J. A. C. S., 80, 3686 (1958).

by C. Djerassi, E. J. Eisenbraun, B. Gilbert, A. J. Lemin, S. P. Marfey and M. P. Morris.

225.     Optical Rotatory Dispersion Studies  XVI. Synthesis and Conformation of Optically Active Octalones and Decalones.

J. A. C. S., 80, 3986 (1958).

by C. Djerassi and D. Marshall.

226.     Optical Rotatory Dispersion Studies XVII. Detection of Conformational Alterations.  Effects of Alkyl Groups and Double Bonds in Polycyclic System.

J. A. C. S., 80, 4001 (1958).

by C. Djerassi, O. Halpern, V. Halpern and B. Riniker.

227.     Optical Rotatory Dispersion Studies XVIII.  Demonstration of Conformational Mobility in 2-chloro-5-methylcyclohexanone.

Tetrahedron, 3, 319 (1958).

by C. Djerassi and L. E. Geller.

228.     Studies in Organic Sulfur Compounds  X. The Scope of the Raney Nickel Desulfurization of Cyclic Hemithioketals (1,3-0xathiolanes and 1,3-0xathianes).

J. A. C. S., 80, 4723 (1958).

by C. Djerassi, M. Shamma and T. Y. Kan.

229.     Macrolide Antibiotics  VII. The Structure of Neomethymycin.

Tetrahedron, 3, 255 (1958).

by C. Djerassi and O. Halpern.

230.     Naturally Occurring Oxygen Heterocyclics III. The Structure of the Isoflavone Tlatlancuayin.

J. A. C. S., 80, 5258 (1958).

by P. Crabbe’, P. R. Leeming and C. Djerassi.

231.     Optical Rotatory Dispersion Studies XIX.  8-Methylhydrindanones.

J. A. C. S., 80, 4853 (1958).

by C. Djerassi, D. Marshall and T. Nakano.

232.     Optical Rotatory Dispersion Studies XX. Transannular Nitrogen-Carbonyl Interaction in Cyclic Aminoketones and Optical Rotatory Dispersion.

J. A. C. S., 80, 4858 (1958).

by N. J. Leonard, J. A. Adamcik, C. Djerassi and O. Halpern.

233.     Steroids XCVII. Some Chemical and Biological Properties of 19-nor-17α-Ethynyltestosterone.

Ann. N. Y. Acad. Sci., 71, 500 (1958).
by D. A. McGinty and C. Djerassi. 

234.     Terpenoids XXXVI. Iresin (part 4). Isolation and Structure of Three Sesquiterpenes Related to Iresin.

Bull. Soc. Chim. Belg., 67, 632 (1958).

by P. Crabbe’, S. Burstein and C. Djerassi.

235.     Steroids XCVIII.  Synthesis of Some 10β-Hydroxy-10-norsteroids.

J. Org. Chem., 23, 1744 (1958).

by J. Perez Ruelas, J. Iriarte, F. Kincl and C. Djerassi.

236.     Steroids XCIX.  Synthesis of Ring B Oxygenated Estrogens.

J. A. C. S., 80, 6105 (1958).

by J. Iriarte, H. J. Ringold and C. Djerassi.

237.     Steroids C. Synthesis of 19-nor-Δ4-Pregnene-11β,17α,2l-triol-3,20-dione (19-norhydrocortisone) and Related 19-nor-Adrenal Hormones.

J. A. C. S., 80, 6110 (1958).

by A. Zaffaroni, H. J. Ringold, G. Rosenkranz, F. Sondheimer, G. H. Thomas and C. Djerassi.

238.     Research Trends in the Steroid Hormone Field.

Drug Trade News, March 1958.

by C. Djerassi and H. J. Ringold.

239.     Steroids CII. Synthesis of 19-norprogesterone from Estrone.

J. A. C. S., 80, 6118 (1958).

by J. S. Mills, H. J. Ringold and C. Djerassi.

 

240.     The Neutral Constituents of the Cactus Lophocereus schottii. The Structure of Lophenol (4α-methyl-Δ-cholesten-3β-ol). A Link in Sterol Biogenesis.

J. A. C. S., 80, 6284 (1958).

by C. Djerassi, G. W. Krakower, A. J. Lemin, L. H. Liu, J. S. Mills and R. Villoti.

241.     Macrolide Antibiotics VIII.  The Absolute Configuration of Certain Centers in Neomethymycin, Erythromycin and Related Antibiotics.

Tetrahedron, 4, 369 (1958).

by C. Djerassi, O. Halpern, D. I. Wilkinson and E. J. Eisenbraun.

242.     Steroids CVIII.  A New Class of Potent Cortical Hormones. 6α-Chlorocorticoids.

J. A. C. S., 80, 6464 (1958).

by H. J. Ringold, O. Mancera, C. Djerassi, A. Bowers, E. Batres, H. Martinez, E. Necoechea, J. Edwards, M. Velasco, C. Casas Campillo and R. I. Dorfman.

 

1959

243.     Optical Rotatory Dispersion Studies XXI. Effect of Ring Size.

J. A. C. S., 81, 237 (1959).

by C. Djerassi and G. W. Krakower.

244.     Steroids CVII. Δ5(6)-19-Nor-Steroids. A New Class of Potent Anabolic Agents.

J. A. C. S., 81, 436 (1959).

by J. Iriarte, C. Djerassi and H. J. Ringold.

245.     Steroidal Sapogenins XXXVIII. Synthesis of Cortisone from Botogenin.

J. A. C. S., 81, 439 (1959).
by O. Halpern and C. Djerassi.

246.     Reaction of the Steroidal Sapogenin Spiroketa1 System with Ethanedithio1.

J. Org. Chem., 24, 1 (1959).

by C. Djerassi, O. Halpern, G. R. Pettit and G. H. Thomas.

247.     Optical Rotatory Dispersion Studies XXII. Detection and Stereochemical Implication of Hemiketa1 Formation.

J. A. C. S., 81, 947 (1959).

by C. Djerassi, L. A. Mitscher and B. J. Mitscher.

248.     Naturally Occurring Oxygen Heterocyclics  IV. The Methylation of Pyronones.

J. A. C. S., 81, 2427 (1959).

by D. Herbst, W. B. Mors, O. R. Gottlieb and C. Djerassi.

249.     Naturally Occurring Oxygen Heterocyclics V. Mammein.

Tetrahedron Letters, 1, 10 (1959).

by C. Djerassi, E. J. Eisenbraun, R. A. Finnegan and B. Gilbert.

 

 

250.     Alkaloid Studies XXII. The Alkaloids of Vallesia Dichotoma Ruiz et Pav.

J. Org. Chem., 24, 314 (1959).

by J. S. E. Holker, M. Cais, F. A. Hochstein and C. Djerassi.

251.     Steroids CXII. Cycloethylene Ketal Formation of 19-Nor-Δ4-3-Keto Steroids.

J. A. C. S., 81, 3120 (1959).

by J. A. Zderic, D. Chavez Limon, H. J. Ringold and C. Djerassi.

252.     Steroids CXIII.  6-Methyl Estrogens.

J. Org. Chem., 24, 311 (1959).

by E. Velarde, J. Iriarte, H. J. Ringold and C. Djerassi.

253.     Steroids CXVI. 6α-Fluoro-l6α-Methylhydro-cortisone and Related Steroids.

Proc. Chem. Soc., 87 (1959).

by J. A. Edwards, A. Zaffaroni, H. J. Ringold and C. Djerassi.

254.     Steroids CXVII. 6α-Fluoro-l6α -Hydroxy Cortical Hormones.

J. A. C. S., 81, 1264 (1959).

by J. S. Mills, A. Bowers, C. Casas Campillo, C. Djerassi and H. J. Ringold.

255.     Terpenoids XXXVII. The Structure of the Pentacyclic Diterpene Cafestol. On the Absolute Configuration of Diterpenes and Alkaloids of the Phyllocladene Group.

J. A. C. S., 81, 2386 (1959).

by C. Djerassi, M. Cais and L. A. Mitscher.

256.     Optical Rotatory Dispersion Studies XXIII.  α-Haloketones (part 3).

J. A. C. S., 81, 2383 (1959).

by C. Djerassi, I. Fornaguera and O. Mancera.

257.     Research Trends in the Steroid Hormone Field

Drug Trade News, March 1959.

by C. Djerassi and H. J. Ringold.

258.     Optical Rotatory Dispersion Studies XXIV.  Effect of Distance of a Single Asymmetric Center from an Aliphatic Carbonyl Function.

J. A. C. S., 81, 2789 (1959).
by C. Djerassi and L. E. Geller.

259.     Terpenoids XL. Absolute Configuration of Eremophi1one.

J. A. C. S., 81, 2914 (1959).

by L. H. Zalkow, F. X. Markley and C. Djerassi.

260.     Steroids CXXII.  6α-Fluoro-16α-Methylcorticoids. Synthesis and Biological Activity.

J. A. C. S., 81, 3156 (1959).

by J. A. Edwards, H. J. Ringold and C. Djerassi. 

 

 

261.     Terpenoids XXXVIII. Interconversion of Eremophilone, Hydroxyeremophilone and Hydroxydihydroeremophilone. The Relative Stereochemistry of Eremophi1one and its Reduction Products.

J. A. C. S., 81, 3424 (1959).

by C. Djerassi, R. Mauli and L. H. Zalkow.

262.     Steroids CXVIII.  6-Methyl Derivatives of 17α-Hydroxyprogesterone and of Reichstein's Substance "S".

J. A. C. S., 81, 3712 (1959).

by H. J. Ringold, J. Perez Ruelas, E. Batres and C. Djerassi.

263.     Steroids CXIX. The Preparation of Some Vicinal Glycols in the Cortical Hormone Series.

J. Org. Chem., 24, 909 (1959).

by J. A. Zderic, H. Carpio and C. Djerassi.

264.     Optical Rotatory Dispersion Studies XXV.  Effect of Carbonyl Groups in Pentacyclic Triterpenes.

J. A. C. S., 81, 4587 (1959).

by C. Djerassi, J. Osiecki and W. Closson.

265.     Plant Steroids and Related Substances.

Fourth International Congress of Biochemistry (Vienna, 1958), Vol. IV, pp. 1 - 19, Pergamon Press, Ltd. (London, 1959).

by C. Djerassi.

266.     Optical Rotatory Dispersion Studies XXX. Demonstration of Boat Form in a 3-Keto Steroid.

J. A. C. S., 81, 4997 (1959).

by C. Djerassi, N. Finch and R. Mauli. 

267.     Optical Rotatory Dispersion Studies XXXI.
Anomalous Dispersion Curves of Dithiocarbamates of α-Amino Acids and Peptides. Stereochemical Correlations Between α-Hydroxy and α-Amino Acids.

J. A. C. S., 81, 5002 (1959).

by B. Sjöberg, A. Fredga and C. Djerassi.

268.     Optical Rotatory Dispersion Studies XXXII.
Some Recent Applications of Optical Rotatory Dispersion Studies to Organic Chemical Problems.

Rec. Chem. Prog., 20, 101 - 145 (1959).
by C. Djerassi. 

269.     Naturally Occurring Oxygen Heterocyclics VI. 4-Phenyl-5,7-dihydroxy-6-isovaleryl-8-isopen-tenylcoumarin.

Tetrahedron Letters, 13, 11 - 15 (1959).
by R. A. Finnegan and C. Djerassi.

 

 

270.     The Structure of Julocrotine.

Tetrahedron Letters, 14, 8 - 12 (1959).

by T. Nakano, C. Djerassi, R. A. Corral and O. O. Orazi.

271.     Steroids CXXIII.  19-Nor-6-methylandrostane Derivatives.

J. A. C. S., 81, 4566 (1959).

by R. Villotti, C. Djerassi and H. J. Ringold.

272.     Optical Rotatory Dispersion Studies XXVIII. The Absolute Configuration of the Sesquiter-penoid Petasin.

Helv. Chim. Acta, 42, 1785 (1959).
by A. Aebi and C. Djerassi.

273.     Optical Rotatory Dispersion Studies XXIX.
Absolute Configuration of Phytol.

Proc. Chem. Soc., 264 (1959).

by P. Crabbe’, C. Djerassi, E. J. Eisenbraun and S. Liu.

274.     Terpenoids XXXIX.  Iresin (part 5). Complete Structure and Absolute Configuration.

Tetrahedron, 7, 37 (1959).

by C. Djerassi and S. Burstein.

275.     The Constitutions of Dammarenolic and Nyctan-thic Acids.

Proc. Chem. Soc., 306 (1959).

by A. Arigoni, D. H. R. Barton, R. Bernas-coni, C. Djerassi, J. S. Mills and R. Wolff.

276.     Macrolide Antibiotics IX.  Filipin.

Proc. Chem. Soc., 316 (1959).

by B. Berkoz and C. Dierassi.

277.     The Absolute Configuration of Rosenonolactone and Related Diterpenoids.

J. A. C. S., 81, 5520 (1959).

by W. B. Whalley, B. Green, D. Arigoni, J. J. Britt and C. Djerassi.

 

1960

278.     Steroids CXXX. Synthesis of 12β-Hydroxypred-niso1one-11β,12β-Acetonide 21-Acetate.

J. A. C. S., 82, 446 (1960).

by J. A. Zderic, H. Carpio and C. Djerassi.

279.     Optical Rotatory Dispersion Studies XXVI.  α-Ha1oketones (part 4).

J. Org. Chem., 25, 1 (1960).

by C. Djerassi, L. E. Geller and E. J. Eisenbraun.

280.     Optical Rotatory Dispersion Studies XXVII.
Quantitative Studies of an α-Haloketone by the Rotatory Dispersion Method.

J. Org. Chem., 25, 6 (1960).

by N. L. Allinger, J. Allinger, L. E. Geller and C. Djerassi.

281.     Steroids CXXXIV. Derivatives of 17α-Ethynyl- testosterone and 17α-Ethynyl-19-nortestosterone.

J. A. C. S., 82, 1230 (1960).

by L. Knox, J. A. Zderic, J. Perez Ruelas, C. Djerassi and H. J. Ringold.

282.     Terpenoids XLI. The Constitutions of Dam-mareno1ic and Nyctanthic Acids.

J. Chem. Soc., 1900 (1960).

by D. Arigoni, D. H. R. Barton, R. Bernasconi, C. Djerassi, J. S. Mills and R. E. Wolff.

283.     Alkaloid Studies XXIII.  Isolation of 4 New Aspidosperma Alkaloids: Cy1indrocarpine, Refractine, Pyrifo1ine and Pyrifo1idine.

Experientia, 16, 61 (1960).

by B. Gilbert, L. D. Antonaccio, A. A. P. G. Archer and C. Djerassi.

284.     Optical Rotatory Dispersion Studies XXXIII.  α-Ha1oketones (part 6). Trans-2-bromo-5-t-buty1cyc1ohexanone.

J. Org. Chem., 25, 917 (1960).

by C. Djerassi, E. Warawa, R. E. Wolff and E. J. Eisenbraun.

285.     Steroids CXXXVI. Synthesis of a New Class of Potent Cortical Hormones. 6α-Fluoro-and 6α, 9α-Difluoro-16α-methylprednisolone and Related Steroids.

J. A. C. S., 82, 2318 (1960).

by J. A. Edwards, H. J. Ringold and C. Djerassi.

286.     Optical Rotatory Dispersion Studies XXXIV.  The Relative Stabilities of cis and trans Isomers (VIII). Kinetic and Equilibrium Measurements of Some Substituted Hydrindanones.

J. Org. Chem., 25, 922 (1960).

by N. L. Allinger, R. B. Hermann and C. Djerassi.

287.     Optical Rotatory Dispersion Studies XXXV.  On the Conformation of Substituted Cyclopen-tanones. Rotatory Dispersion and Spectral Data of Some Steroidal α-Halocyclopentanones.

Experientia, 16, 138 (1960).
by J. Fishman and C. Djerassi.

288. Steroids CXXXVII.  Synthesis of a New Class of Potent Cortical Hormones. 6α,9α-Difluoro-l6α-hydroxyprednisolone and its Acetonide.

J. A. C. S., 82, 3399 (1960).

by J. S. Mills, A. Bowers, C. Djerassi and H. J. Ringold.

289.     Steroids CXLIV. Synthesis of Some 6α,17α-Dihaloprogesterones.

J. Org. Chem., 25, 1056 (1960).

by J. S. Mills, O. Candiani and C. Djerassi.

290.     Terpenoids XLII. The Absolute Configuration of (-)-Methylisopulegone.

J. A. C. S., 32, 3476 (1960).

by E. J. Eisenbraun, F. Burian, Jeanne Osiecki and C. Djerassi.

 

291.     Terpenoids XLIII. On the Absolute Configuration of Guaiol. Correlation with Nepetalinic Acid.

J. A. C. S., 82, 3648 (1960).

by E. J. Eisenbraun, T. George, B. Riniker and C. Djerassi.

292.     Terpenoids XLIV. Synthetic Confirmation of the Structure and Absolute Configuration of Petasin.

J. A. C. S., 82, 4337 (1960).
by D. Herbst and C. Djerassi.

293.     Terpenoids XLV. Further Studies on the Structure and Absolute Configuration of Cafestol.

J. A. C. S., 82, 4342 (1960).

by R. A. Finnegan and C. Djerassi.

294.     Optical Rotatory Dispersion Studies XXXIX.  Configuration and Optical Rotatory Dispersion of Atropisomeric Biaryls.

J. A. C. S., 82, 4740 (1960).

by K. Mislow, M. A. W. Glass, R. E. O'Brien, P. Rutkin, D. H. Steinberg and C. Djerassi.

295.     Optical Rotatory Dispersion Studies XL.  The Absolute Configuration of Biaryls by Rotatory Dispersion Comparison with a Sesquiterpene.

J. A. C. S., 82, 5247 (1960).
by K. Mislow and C. Djerassi.

296.     Macrolide Antibiotics X.  The Biosynthesis of Methymycin.

Chem. & Ind., 1245 (1960).

by A. J. Birch, E. Pride, R. W. Rickards, P. J. Thompson, J. D. Dutcher, D. Perlman and C. Djerassi.

297.     Optical Rotatory Dispersion Studies XXXVI. α¬Haloketones (part 7). Demonstration of Boat Form in the Bromination of 2α-Methylcholestanone.

J. A. C. S., 82, 5488 (1960).

by C. Djerassi, N. Finch, R. C. Cookson and C. W. Bird.

298.     Steroids CXLV. 2-Methylandrostane Derivatives Demonstration of Boat Form in the Bromination of 2α-Methylandrostan-17β-ol-3-one.

J. A. C. S., 82, 5494 (1960).

by R. Mauli, H. J. Ringold and C. Djerassi. 

299.     Optical Rotatory Dispersion Studies XXXVII.  Steroids CXLVI. On the Mechanism and Stereo-chemical Course of the Bromination of 3-Keto Steroids and Their Enol Acetates.

J. A. C. S, 82, 5693 (1960).

by R. Villotti, H. J. Ringold and C. Djerassi.

300.     Optical Rotatory Dispersion Studies XLIII.  Absolute Configurational Assignment of α-Substituted Carboxylic Acids by Anomalous Rotatory Dispersion of Their Acylthiourea Deriva-times.

J. A. C. S., 82, 5755 (1960).
by C. Djerassi and K. Undheim.

301.     Bromination of 2-0xo-Steroids.

Chem. & Ind., 1385 (1960).
by C. Djerassi and T. Nakano.

302.     Optical Rotatory Dispersion Studies XLIV.  Anomalous Rotatory Dispersion Curves of Olefin Derivatives. Osmate Esters.

J. A. C. S., 82, 5953 (1960).

by E. Bunnenberg and C. Djerassi.

303.     Alkaloid Studies XXV.  The Structures of the Aspidosperma Alkaloids Cylindrocarpine and Cylindrocarpidine.

Experientia, 16, 532 (1960).

by C. Djerassi, A. A. P. G. Archer, T. George, B. Gilbert, J. N. Shoolery and L. F. Johnson.

304.     Terpenoids XLVIII. The Absolute Configuration of Eremophilone and Related Sesquiterpenes.

J. A. C. S., 82, 6354 (1960).

by L. H. Zalkow, F. X. Markley and C. Djerassi.

305.     Naturally Occurring Oxygen Heterocyclics VII.
The Structure of Mammein.

J. Org. Chem., 25, 2164 (1960).

by C. Djerassi, E. J. Eisenbraun, R. A. Finnegan and B. Gilbert.

306.     Naturally Occurring Oxygen Heterocyclics VIII.
Synthesis of Some Coumarins Related to Mammein.

J. Org. Chem., 25, 2169 (1960).

by R. A. Finnegan, B. Gilbert, E. J. Eisen¬braun and C. Djerassi.

307.     Naturally Occurring Oxygen Heterocyclics IX.
Isolation and Characterization of Genipin.

J. Org. Chem., 25, 2174 (1960).

by C. Djerassi, J. D. Gray and Fred A. Kincl.

 

1961

308.     Chiapagenin and Isochiapagenin. Two New Steroidal Sapogenins from Dioscorea Chiapasensis.

J. Org. Chem., 26, 155 (1961).

by I. T. Harrison, M. Velasco and C. Djerassi.

309.     Terpenoids XLVI.  Copalic Acid.

J. Org. Chem., 26, 167 (1961).
by T. Nakano and C. Djerassi.

310.     Optical Rotatory Dispersion Studies XLI.  α-Haloketones (part 9). Bromination of Optically Active cis-l-Decalone.  Demonstration of Conformational Mobility by Rotatory Dispersion.

J. A. C. S., 83, 736 (1961).

by C. Djerassi and J. Staunton.

311.     Alkaloid Studies XXVII. The Structure of Skytanthine.

Chem. & Ind., 210 (1961).

by C. Djerassi, J. P. Kutney, M. Shamma, J. N. Shoolery and L. F. Johnson.

312.     Optical Rotatory Dispersion Studies XLV.
Demonstration of Conformational Mobility in an α-Hydroxycyclohexanone.

Chem. & Ind., 258 (1961).

by C. Djerassi, R. Records and B. Bach.

313.     Alkaloid Studies XXIX. On the Absolute Configuration of the Diterpene Alkaloids Related to Veatchine and Atisine.

Tetrahedron Letters, 119 (1961).
by H. Vorbrueggen and C. Djerassi.

314.     Steroids CLVI.  Ring D Unsaturated l6-Methylated Corticosteroids.

J. Org. Chern., 26, 871 (1961).

by E. Batres, T. Cardenas, J. A. Edwards, G. Monroy, O. Mancera, C. Djerassi and H. J. Ringold.

315.     Optical Rotatory Dispersion Studies LII.  Determination of the Absolute Configuration of Jatamansone (Valeranone) by the Axial α-Haloketone Rule.

Tetrahedron Letters, 237 (1961).

by C. Djerassi, T. R. Govindachari, B. R. Pai and K. K. Purushothaman. 

316.     Naturally Occurring Oxygen Heterocyclics X. 4-Phenyl-5,7-Dihydroxy-6-Isova1eryl-8-Isopentenylcourmarin.

J. Org. Chem., 26, 1180 (1961).

by R. A. Finnegan, M. P. Morris and C. Djerassi.

317.     Alkaloid Studies XXIV.  Structure of Julo-crotine.

J. Org. Chem., 26, 1184 (1961).

by T. Nakano, C. Djerassi, R. A. Corral and O. O. Orazi.

318.     Terpenoids XLVII. The Structure of Genipin.

J. Org. Chern., 26, 1192 (1961).

by C. Djerassi, T. Nakano, A. N. James, L. H. Za1kow, E. J. Eisenbraun and J. N. Shoo1ery.

319.     Alkaloid Studies XXVIII.  Structure of the Alkaloid Arborinine.

Chem. & Ind., 464 (1961).

by S. C. Pakrashi, S. K. Roy, L. F. Johnson, T. George and C. Djerassi.

320.     Alkaloid Studies XXVI. The Constitution of PYrifo1idine.

Experientia, 17, 162 (1961).

by C. Djerassi, B. Gilbert, J. N. Shoo1ery, L. F. Johnson and K. Biernann.

 

321.     Optical Rotatory Dispersion Studies XXXVIII.
The Relative Stereochemistry of the Rotenoids.

J. Chem. Soc., 1448 (1961).

by C. Djerassi, W. D. Ollis and R. C. Russell.

322.     Optical Rotatory Dispersion Studies XLVIII.
The Nitroso Chrornophore.

J. A. C. S., 83, 2307 (1961).

by C. Djerassi, E. Lund, E. Bunnenberg and B. Sjöberg.

323.     Steroids and Terpenoids from Different Iresin Species.

Bull. Soc. Chim. Be1g., 70, 168 (1961).

by P. Crabbe’, E. A. Azpeitia and C. Djerassi.

324.     Optical Rotatory Dispersion Studies XLII.  Disulfides and Diselenides.

Acta Chem. Scand., 15, 417 (1961).

by C. Djerassi, A. Fredga and B. Sjöberg.

325.     Steroidal Sapogenins XL. Reaction of 12-oxo-sapogenins with Selenium Dioxide: Synthesis of 3β~-Hydroxypregna-5,9(11),16-triene-20-one from Botogenin.

J. Chem. Soc., 1859 (1961).

by A. Bowers, E. Denot, M. B. Sanchez, F. Neumann and C. Djerassi.

326.     Optical Rotatory Dispersion Studies LIV.
Optical Rotatory Dispersion.

Endeavour, 20, 138 (1961).
by C. Djerassi.

327.     Optical Rotatory Dispersion Studies LIII. A Generalization of the Octant Rule.

J. A. C. S., 83, 2771 (1961).

by K. Mislow, M. A. W. Glass, A. Moscowitz and C. Djerassi.

328.     Optical Rotatory Dispersion Studies XLVII.
Application of Anomalous Optical Rotatory Dispersion to Organic Chemical Problems.

Tetrahedron, 13, 13 (1961).
by C. Djerassi.

329.     Alkaloid Studies XXXI. A Direct Correlation of the Diterpene Alkaloids and Hydrocarbons of the Phyllocladene Group. Interconversion of Garryfoline and Steviol.

J. A. C. S., 83, 3163 (1961).

by E. Mosettig; P. Quitt, U. Beg1inger, J. A. Waters, H. Vorbrueggen and C. Djerassi.

330.     Optical Rotatory Dispersion Studies LV.  Application of Optical Rotatory Dispersion Studies to Problems in Natural Products Chemistry.

Pure and App1. Chem., 2, 475 (1961).

by C. Djerassi.

331.     Optical Rotatory Dispersion Studies LVII.  The Octant Rule and the t-Butyl Group.  Evidence for a Twist Form in cis-t-Butyl-5-methylcyclo- hexanone.

J. A. C. S., 83, 3334 (1961).

by C. Djerassi; E. J. Warawa, J. M. Berdahl and E. J. Eisenbraun.

332.     Optical Rotatory Dispersion Studies LX.  Optical Rotatory Dispersion.

Science, 134, 649 (1961).
by C. Djerassi.

333.     Terpenoids L. Cycloart-23-ene-3β,25-diol: A New Cyclopropane-containing Triterpene from Spanish Moss.

Chem. & Ind., 1311 (1961).

by R. McCrindle and C. Djerassi.

334.     Optical Rotatory Dispersion Studies LVIII.
The Complete Absolute Configuration of Steviol, Kaurene and the Diterpene Alkaloids of the Garryfoline and Atisine Groups.

J. A. C. S., 83, 3720 (1961).

by C. Djerassi, P. Quitt, E. Mosettig, R. C. Cambie, P. S. Rutledge and L. H. Briggs.

335.     Optical Rotatory Dispersion Studies XLIX.  Anomalous Rotatory Dispersion of Optically Active Terpene Trithiones.

Chem. Ber., 94, 2305 (1961).

by C. Djerassi and A. Lüttringhaus.

336.     Optical Rotatory Dispersion Studies L.  The Conformers of trans-2-Chloro-5-methylcyclo-hexanone.

J. Org. Chem., 26, 3521 (1961).

by J. Allinger, N. L. Allinger, L. E. Geller and C. Djerassi.

337.     Macrolide Antibiotics XI.  The Structure of the Macrolide Antibiotic Filipin.

Tetrahedron Letters, 383 (1961).

by C. Djerassi, M. Ishikawa, H. Budzikiewicz, J. N. Shoolery and L. F. Johnson.

338.     Optical Rotatory Dispersion Studies XLVI.
Stereochemical Assignments through Anomalous Rotatory Dispersion Curves of α-Aminoacid Derivatives. 3-Phenyl-2-thiohydantoins and α-thionocarbethoxy Amino Acids.

Acta Chem. Scand., 15, 903 (1961).

by C. Djerassi, K. Undheim, R. C. Sheppard, W. G. Terry and B. Sjöberg.

339.     Structure and the Optical Rotatory Dispersion of Saturated Ketones.

J. A. C. S., 83, 4013 (1961).

by W. Moffitt, R. B. Woodward, A. Moscowitz, W. Klyne and C. Djerassi.

340.     Terpenoids XLIX.  Preparation of Optically Active Polyalkylcyclohexanones from (+)-Pu1egone, (-)-Menthone and (-)-Carvone.

J. A. C. S., 83, 4433 (1961).

by C. Djerassi; J. Osiecki and E. J. Eisenbraun.

341.     Optical Rotatory Dispersion Studies LIX.  The Octant Rule and Deuterium. Synthesis of 3-Deuteriocyclopentanone.

J. A. C. S., 83, 4609 (1961).
by C. Djerassi and B. Tursch.

342.     Optical Rotatory Dispersion Studies LI.  Absolute Configurational Assignments of α-Amino Acids and Peptides through Anomalous Rotatory Dispersion of N-phtha1oyl Derivatives.

J. Org. Chem., 26, 4509 (1961).

by C. Djerassi, E. Lund, E. Bunnenberg and J. C. Sheehan.

343.     Optical Rotatory Dispersion Studies LVI.  Thiones.

J. Org. Chem., 26, 4675 (1961).
by C. Djerassi and D. Herbst.

344.     Optical Rotatory Dispersion Studies LXI.  Optical Rotatory Dispersion and Spectral Data of Some Steroidal Ring D Ketol Acetates of the 14β Series.

Experientia, 17, 565 (1961).

by C. Djerassi, J. Fishman and T. Nambara.

345.     The Structure of the Cactus Sterol Peniocerol.

Proc. Chem. Soc., 450 (1961).

by C. Djerassi, R. D. H. Murray and R. Villotti.

346.     Alkaloid Studies XXX.  Isolation and Constitution of Three New Aspidosperma Alkaloids: Cylindrocarpine, Cylindrocarpidine and Pyrifolidine.

Tetrahedron, 16, 212 (1961).

by C. Djerassi, A. A. P. G. Archer, T. George, B. Gilbert and L. D. Antonaccio.

347.     Optical Rotatory Dispersion Studies. LXII. Configurational Assignments Among the Aporphine Alkaloids.

Experientia, 18, 53 (1962)

by C. Djerassi, K. Mislow and M. Shamma.

348.     Optical Rotatory Dispersion Studies. LXIII. Halogen Atoms and the Octant Rule.

Chem. Ind., 177 (1962)
by C. S. Barnes and C. Djerassi.

349.     Steroids. CLXXVII. New Approaches to C-11 Oxygenated 19-Norpregnones.

J. Org. Chem., 27, 361 (1962)

by A. Bowers, J. S. Mills, C. Casas­Campillo and C. Djerassi.

350.     Alkaloid Studies. XXXII. Studies on Skytanthus Acutus. The Structure of the Monoterpenoid Alkaloid Skytanthine.

Tetrahedron, 18, 183 (1962)

by C. Djerassi, J. P. Kutney and M. Shamma.

351.     Mass Spectrometry in Structural and Stereochemical Problems. IV. Vindolinine.

Proc. Natl. Acad. Sci. U.S., 48, 113 (1962)

by C. Djerassi, S. E. Flores, H. Budzikiewicz,

J. M. Wilson, L. J. Durham, J. LeMen,

M.-M. Janot, M. Plat, M. Gorman and N. Neuss.

352.     Optical Rotatory Dispersion. LXIX. The Absolute Configuration of the 2-Methylcyclohexanols and Some Observations on a Twist Form in the Conformational Equilibrium of 2-Methylcyclohexanone.

J.A.C.S., 84, 874 (1962)

by C. Beard, C. Djerassi, T. Elliott and R. C. C. Tao.

353.     Optical Rotatory Dispersion Studies.  LXXII. Inherently Dissymmetric Chromophores. Optical Rotatory Dispersion of α,β-unsaturated Ketones and Conformational Analysis of Cyclohexenones.

J.A.C.S., 84, 870 (1962)

by C. Djerassi, R. Records, E. Bunnenberg,

K. Mislow and A. Moscowitz.

354.     Studies in Organic Sulfur Compounds. XI.  On the Reaction of Enamines with Hydrogen Sulfide.

J. Org. Chem., 27, 1041 (1962)

by C. Djerassi and B. Tursch.

355.     Studies in Organic Sulfur Compounds. XII.
Preparation of Inaccessible Enamine Amides by Desulfurization of Thiazolidines and Thiazolidinones.

J. Org. Chem., 27, 1112 (1962)

by C. Djerassi, N. Crossley and M. A. Kielczewski.

356.     Mass Spectrometry in Structural and Stereochemical Problems. II. Pyrifoline and Refractidine.

Tetrahedron Letters, 59 (1962)
by B. Gilbert, J. M. Ferreira, R. J. Oweller,

C. E. Swanholm, H. Budzikiewicz, L. J. Durham and C. Djerassi.

357.     Mass Spectrometry in Structural and Stereochemical Problems. III. Spegazzinine and Spegazzinidine.

Experientia, 18, 113 (1962)
by C. Djerassi, H. W. Brewer, H. Budzikiewicz, O. O. Orazi and R. A. Corral.

358.     Optical Rotatory Dispersion Studies. LXIV. Detection of Conformational Changes Caused by Equatorial Methyl Groups.

J.A.C.S., 84, 1249 (1962)

by C. Djerassi, E. Lund and A. A. Akhrem.

359.     Steroids. CXCI. Some Reactions of a 6-Methyl-Δ5-3β- Hydroxy Steroid System.

J. Org. Chem., 27, 1139 (1962)

by J. Iriarte, J. N. Shoolery and C. Djerassi.

360.     Optical Rotatory Dispersion Studies. LXV. Differentiation of Epimeric Steroidal Alcohols by Anomalous Rotatory Dispersion. Some Observations on the Nitrite Chromophore.

J. Org. Chem., 27, 1173 (1962)

by C. Djerassi, I. T. Harrison, O. Zagneetko and A. L. Nussbaum.

361.     Optical Rotatory Dispersion Studies. LXVIII. Configuration, Conformation and Rotatory Dispersion of Optically Active Biaryls.

J.A.C.S., 84, 1455 (1962)

by K. Mislow, M. A. W. Glass, R. E. O'Brien, P. Rutkin, D. M. Steinberg, J. Weiss and C. Djerassi.

362.     Mass Spectrometry in Structural and Stereochemical Problems. I. Steroid Ketones.

J.A.C.S., 84, 1430 (1962)
by H. Budzikiewicz and C. Djerassi.

363.     Mass Spectrometry in Structural and Stereochemical Problems. V. Refractine and Aspidefractine.

J.A.C.S., 84, 1499 (1962)
by C. Djerassi, T. George, N. Finch, H. F. Lodish, H. Budzikiewicz and B. Gilbert.

364.     Steroids. CLXXII. Factors Controlling the Direction of Enol Acetylation of 3-Oxo-steroids.

J. Chem. Sac., 1323 (1962)
by B. Berkoz, E. P. Chavez and C. Djerassi.

365.     Naturally Occurring Oxygen Heterocyclics. XI. Veraguensin.

J. Chem. Soc., 1459 (1962)
by N. S. Crossley and C. Djerassi.

366.     Recent Applications of Optical Rotatory Dispersion to Organic Chemistry.

Chemistry (Taiwan), No. 4, 249-254 (1961)
by C. Djerassi.

367.     Mass Spectrometry in Structural and Stereochemical Problems. VII. Vincadifformine (Alcaloides des Pervenches).

Tetrahedron Letters, 235 (1962)
by C. Djerassi, H. Budzikiewicz, J. M. Wilson, J. Gosset, J. LeMen and M.-M. Janot.

368.     Optical Rotatory Dispersion Studies. LXVI.
Optical Rotatory Dispersion Associated with Dissymmetric Non-Conjugated Chromophores. An Extension of the Octant Rule.

J.A.C.S., 84, 1945 (1962)
by A. Moscowitz, K. Mislow, M. A. W. Glass and C. Djerassi.

369.     Optical Rotatory Dispersion Studies. LXXI. Halogen Atoms and the Octant Rule. The Conformations of Some 5α–Halocholestan-3–ones.

J.A.C.S., 84, 1962 (1962)
by C. S. Barnes and C. Djerassi.

370.     Mass Spectrometry in Structural and Stereochemical Problems. VIII. Unsaturated Pectacyclic Triterpenoids.

Tetrahedron Letters, 263 (1962)
by C. Djerassi, H. Budzikiewicz and J. M. Wilson.

371.     Mass Spectrometry in Structural and Stereochemical Problems. IX. Tabersonine.

Tetrahedron Letters. 271 (1962)
by M. Plat, J. LeMen, M.–M. Janot, J. M. Wilson, H. Budzikiewicz, L. J. Durham, Y. Nakagawa, and C. Djerassi.

372.     A New Route to 1–Oxygenated Steroids.

J. Org. Chem., 27, 2205 (1962)
by C. Djerassi, D. H. Williams and B. Berkoz.

373.     Alkaloid Studies. XXXIII. Mass Spectrometry in Structural and Stereochemical Problems. VI. Polyneuridine, A New Alkaloid from Aspidosperma Polynauron and Some Observations on Mass Spectra of Indole Alkaloids.

J.A.C.S., 84, 2161 (1962)
by L. D. Antonaccio, N. A. Pereira, B. Gilbert, H. Vorbrueggen, H. Budzikiewicz, J. M. Wilson, L. J. Durham and C. Djerassi.

374.     Optical Rotatory Dispersion Studies. LXXV. Optical Rotatory Dispersion and the Twist Conformation of Cyclohexanones.

Proc. Natl. Acad. Sci. U.S., 48, 1093 (1962)
by C. Djerassi and W. Klyne.

375.     Alkaloid Studies. XXIIV. Structure of the Alkaloid Casimiroedine.

Tetrahedron Letters, 357 (1962)
by S. Raman, J. Reddy, W. N. Lipscomb, A. L. Kapoor and C. Djerassi.

376.     Optical Rotatory Dispersion Studies. LXVII.
Stereochemistry of the Isomeric Isopulegones. Preparation of (+)–Isopulegone by Thermal Isomerization of (+)–Pulegone.

Ber., 95, 1400 (1962)

by G. Ohloff, J. Osiecki and C. Djerassi.

377.     Mass Spectrometry in Structural and Stereochemical Problems. X. Structure of Mossambine.

Bull. Soc. Chim. France, 1088 (1962)
by X. Monseur, R. Goutarel, J. LeMen, J. M. Wilson, H. Budzikiewicz and C. Djerassi.

378.     Mass Spectrometry in Structural and Stereochemical Problems. XII. Structure of Vincamine and 1l–Methoxyvincamine.

Bull. Soc. Chim. France, 1082 (1962)
by M. Plat, D. D. Mann, J. LeMen, M.–M. Janot, H. Budzikiewicz, J. M. Wilson, L. J. Durham and C. Djerassi.

379.     Studies in Organic Sulphur Compounds. XIII. Lithium Aluminum Hydride Reduction of Episulphides to Olefins.

Chem. Ind., 1236 (1962)
by D. A. Lightner and C. Djerassi.

380.     Optical Rotatory Dispersion Studies. LXXVI. Inherently Dissymmetric Chromophores and Circular Dichroism.

J.A.C.S., 84, 2823 (1962)
By E. Bunnerberg, C. Djerassi, K. Mislow and A. Moscowitz.

381.     Alkaloid Studies. XXXV. The Structures of Stemmadenine and Condylocarpibe.

Tetrahedron Letters, 409 (1962)
by A. Sandoval, F. Walls, J. N. Shoolery, J. M. Wilson, H. Budzikiewicz and C. Djerassi.

382.     Alkaloid Studies. XXXVI. The Complete Absolute Configuration of the Diterpene Alkaloids of the Garrya and Atisine Groups and their Direct Correlation with the Phyllocladene–type Diterpenes.

J.A.C.S., 84, 2990 (1962)
by H. Vorbrueggen and Carl Djerassi.

383.     Alkaloid Studies. XXXVIII. Pilocereine–A Trimeric Cactus Alkaloid.

J.A.C.S., 84, 3210 (1962)
by C. Djerassi, H. W. Brewer, C. Clarke and L. J. Durham.

384.     Optical Rotatory Dispersion Studies. LXX. Anomalous Rotatory Dispersion of Xanthates: Application to Stereochemical Studies of Alcohols.

Acta Chem. Scand., 16, 1079 (1962)
by B. Sjoberg, D. J. Cram, L. Wolf and C. Djerassi.

385.     Optical Rotatory Dispersion Studies. LXXIII. Anomalous Rotatory Dispersion Curves Associated with Acylthioureas. Application to Stereochemical Studies of α—Substituted Carboxylic Acids.

Acta Chem. Scand., 16, 1147 (1962)
by C. Djerassi, K. Undheim and A.—M. Weidler.

386.     Mass Spectrometry in Structural and Stereochemical Problems. XIII. Echitamidine.

Tetrahedron Letters, 653 (1962)
by C. Djerassi, Y. Nakagawa, H. Budzikiewicz, J. M. Wilson, J. LeMen, J. Poisson and M.—M. Janot.

387.     Alkaloid Studies. XXXVII. The Structure of Aspidofiline.

Experientia, 18, 397 (1962)
by C. Djerassi, R. J. Owellen, J. M. Ferreira and L. D. Antonaccio.

388.     Mass Spectrometry in Structural and Stereochemical Problems. XI. The Structures of the Aspidosperma Alkaloids Spegazzinine and Spegazzinidine.

J.A.C.S., 84, 3480 (1962)

by C. Djerassi, H. W. Brewer, H. Budzikiewicz, O. O. Orazi and R. A. Corral.

389.     Terpenoids. LI. Isolation of Some New Cyclopropane-containing Triterpenes from Spanish Moss (Tillandsia  Usneoides).

J. Chem. Soc., 4034 (1962)

by C. Djerassi and R. McCrindle.

390.     Alkaloid Studies. XL. The Alkaloids of Aspidosperma Limae Woodson: Aspidolimidine, Aspidolimine, Demethoxypalosine and Aspidoccrpine

Chem. Ind., 1949 (1962)
by B. Gilbert, J. A. Brissolese, J. M. Wilson, H. Budzikiewicz, L. J. Durham and C. Djerassi.

391.     Alkaloid Studies. XLI. The Constitution of Lochneridine.

Chem. Ind., 1986 (1962)
by Y. Nakagawa, J. M. Wilson, H. Budzikiewicz and C. Djerassi.

392.     Optical Rotatory Dispersion Studies. LXXIV. Application of the Octant Rule to Some Structural and Stereochemical Problems.

J. Chem. Soc., 4929 (1962)
by C. Djerassi and W. Klyne.

393.     Mass Spectrometry in Structural and Stereochemical Problems. XV. Steroidal Sapogenins.

Monatsh., 93, 1033 (1962)
by H. Budzikiewicz, J. M. Wilson and C. Djerassi.

394.     Mass Spectrometry in Structural and Stereochemical Problems. XVI. The Structure of the Aspidosperma Alkaloid Aspidcalbine.

Tetrahedron Letters, 1001 (1962)
by C. Djerassi, L. D. Antonaccio, H. Budzikiewicz, J. M. Wilson and E. Gilbert.

395.     Mass Spectrometry in Structural and Stereochemical Problems. XIV. Steroids with One or Two Aromatic Rings.

J.A.C.S., 84, 4544 (1962)
by C. Djerassi, J. M. Wilson, H. Budzikiewicz and J. W. Chamberlin.

396.     Optical Rotatory Dispersion Studies. LXXVIII. Comparative Studies of Circular Dichroism and Rotatory Dispersion Curves.  Some Observations on Sulfur—Containing Chromophores.

J.A.C.S., 84, 4552 (1962)
by C. Djerassi, H. Wolf and E. Bunnenberg.

397.     Mass Spectrometry in Structural and Stereochemical Problems. XVII. The Structures of Four Alkaloids of Vinca Minor. (—)—Vincadifformine, Minovincine, Minovincinine and 16—Methoxyminovincine.

Bull. Soc. Chim. France, 2237 (1962)
by, M. Plat, J. LeMen, M.—M. Janot, H. Budzikiewicz, J. M. Wilson, L. J. Durham and C. Djerassi.

398.     Alkaloid Studies. XXXIX. The Occurrence of Dihydrocorynanthecl and Aricine in Aspidosperma Marcgravianum Woodson.

J. Org. Chem., 27, 4702 (1962)
by B. Gilbert, L. D. Antonaccio and C. Djerassi.

1963

399.     Mass Spectrometry in Structural and Stereochemical Problems. XXIII. Some Observations on the Mass Spectral Fragmentation of Δ1-­and Δ4-3-Keto Steroids.

Steroids, 1, 1 (1963)
by R. H. Shapiro, J.M. Wilson and Carl Djerassi.

400.     Optical Rotatory Dispersion Studies. LXXIX.
The Location of the n-π* Absorption Band of α-Iodoketones and Its Relation to Circular Dichroism and Optical Rotatory Dispersion.

J.A.C.S., 85. 324 (1963)
By C. Djerassi, H. Wolf and E. Bunnenberg.

401.     Optical Rotatory Dispersion Studies. LXXVII. Application of the Octant Rule to Some Structural and Stereochemical Problems: Part 2.

J. Chem. Soc., 2390 (1963)
By C. Djerassi and W. Klyne.

402.     Steroids. CCXXVII1. The Synthesis of Equilin.

Steroids, 1, 233 (1963)
By J. A. Zderic, H. Carpio, A. Bowers and C. Djerassi.

403.     The Structure of the Cactus Sterol Macdougalli (14α -Methyl-Δ8-Cholestene-3β,6α-Diol) —A Novel Link in Sterol Biogenesis.

J.A.C.S., 85, 835 (1963)
By C. Djerassi, J.C. Knight and D. I. Wil­kinson.

404.     Mass Spectrometry in Structural and Stereochemical Problems. XVIII. Fragmentation and Hydrogen Transfer Reactions After Electron Impact on α-Decalones. Synthesis of Poly-­deuterated α-Decalones.

J.A.C.S., 85, 941 (1963)
By E. Lund, H, Budzikiewicz, J. M. Wilson and C. Djerassi.

405.     Absolute Configuration and Optical Rotatory Dispersion of 3-Methylcycloheptanone and 4-Methylcycloheptanone.

J.A.C.S., 85, 949 (1963)

By C. Djerassi, B. F. Burrows, C. G. Overberger, T. Takekoshi, C. D. Gutsche and C. T. Chang

406.     Mass Spectrometry in Structural and Stereo-chemical Problems. XXII. Determination of Mass Spectra of Non-Volatile Substances.

Experientia, 19, 211 (1963)
J.F. Lynch, J.M. Wilson, H. Budzikiewicz and C. Djerassi

407.     Optical Rotatory Dispersion Studies. LXXX. Inherently Dissymmetric Chromophores and Circular Dichroism. II.

J.A.C.S., 85, 1342 (1963)
By K. Mislow, E. Bunnenberg, R. Records, K. Wellman and C. Djerassi

408.     Mass Spectrometry in Structural and Stereo-chemical Problems. XX. Carapanaubine, a New Alkaloid from Aspidosperma Carapanauba and Some Observations on Mass Spectra of Oxindole Alkaloids.

J.A.C.S., 85, 1523 (1963)
By B. Gilbert, J.A. Brissolese, N. Finch, W.I. Taylor, H. Budzikiewicz, J.M. Wilson and C. Djerassi

409.     Mass Spectrometry in Structural and Stereo-chemical Problems XXI. Fragmentation and Hydrogen Transfer Reactions After Electron Impact on β-Decalones.

J.A.C.S., 85, 1528 (1963)
By E. Lund, H. Budzikiewicz, J.M. Wilson and C. Djerassi

410.     Mass Spectrometry in Structural and Stereo-chemical Problems. XXVI. The Mass Spectra of Alkaloids of the Refractine-Pleiocarpine Class and the Structure of Aspidofractine, a Minor Alkaloid from Aspidosperma refractum Mart.

Helv. Chim. Acta, 46, 742 (1963)
By C. Djerassi, H. Budzikiewicz, R.J. Owellen, J.M. Wilson, W.G. Kump, D.J. LeCourq, A.R. Battersby and H. Schmid

411.     Mass Spectrometry in Structural and Stereo-chemical Problems. XXVIII. Structure of Pseudo Akuammigine and of Picraline.

Bull. Soc. Chim. France, 646 (1963)
By L. Olivier, J. Lévy, J. LeMen, M.-M. Janot, C. Djerassi, H. Budzikiewicz, J.M. Wilson and L.J. Durham

412.     Bromination of 2-Oxosteroids.

Chem. Pharm. Bull. (Tokyo), 11, 465 (1963)
By T. Nakano, M. Hasegawa and C. Djerassi

413.     Optical Rotatory Dispersion Studies. LXXXII. Determination of the Stereochemistry and Con­formation of the Four Isomeric Cyanodihydro­-carvones by Optical Rotatory Dispersion and Dipole Moment Measurements.

J. Org. Chem., 28, 1632 (1963)
By C. Djerassi, R.A. Schneider, H. Vorbrueggen and N. L. Allinger

414.     Optical Rotatory Dispersion Studies. LXXXIV.
Studies of Conformational Mobility by Low‑
Temperature Circular Dichroism Measurements.

J.A.C.S., 85, 1870 (1963)
By K.M. Wellman, E. Bunnenberg and C. Djerassi

415.     Optical Rotatory Dispersion Studies. LXXXI.
Conformational Distortion in 2-Methylcyclo-­hexanones.

Tetrahedron, 19, 919 (1963)
By C. Beard, C. Djerassi, J. Sicher, F. Sĭpoš and M. Tichў

416.     Terpenoids. LII. Constitution and Absolute Configuration of Eremophilenolide.

Tetrahedron, 19, 1101 (1963)
By L. Novotny, J. Jizba, V. Herout, F. Šorm, L.H. zalkow, S. Hu and C. Djerassi

417.     Mass Spectrometry in Structural and Stereo-chemical Problems. XXV. Mass Spectrometric In­vestigations in the Steroid, Terpenoid and Alkaloid Fields.

Pure and Appl. Chem., 6, 575 (1963)
By C. Djerassi

418.     Mass Spectrometry in Structural and Stereo-chemical Problems. XXIV. A Study of the Hydrogen Transfer Reactions Accompanying Frag­mentation of 11-Keto Steroids. Synthesis of Deuterated Androstan-11-ones.

J.A.C.S., 85, 2091 (1963)
By D.H. Williams, J.M. Wilson, H. Budzikiewicz and C. Djerassi

419.     Mass Spectrometry in Structural and Stereo‑chemical Problems. XXVII. Mass Spectral Fragmentation Processes and Hydrogen Transfer Reactions of Amides and Amines.

J.A.C.S., 85, 2470 (1963)
By Z. Pelah, M.A. Kielczewski, J.M. Wilson, M. Ohashi, H. Budzikiewicz and C. Djerassi

420.     Studies in Organic Sulfur Compounds XIV. For­mation of Olefins on Desulfurization of Ethylene Thioketals by Raney Nickel.

J. Chem. Soc., 4046 (1963)
By C. Djerassi and D.H. Williams

421.     The Introduction of Deuterium into the C-19 Angular Methyl Group.

Steroids, 2, 125 (1963)
By C. Djerassi and M.A. Kielczewski

422.     Mass Spectrometry in Structural and Stereo-chemical Problems. XIX. Akuammicine and Related Alkaloids.

Tetrahedron, 19, 1265 (1963)
By H. Budzikiewicz, J.M. Wilson, C. Djerassi, J. Lévy, J. LeMen and M.-M. Janot

423.     Terpenoids LIII. Demonstration of Ring Confor­mational Changes in Triterpenes of the β-Amyrin Class Isolated from Stryphnodendron coriaceum.

J. Org. Chem., 28, 2390 (1963)
By B. Tursch, E. Tursch, I.T. Harrison, G. da Silva, H.J. Monteiro, B. Gilbert, W.B. Mors and C. Djerassi

424.     Optical Rotatory Dispersion Studies. LXXXV.
Circular Dichroism and Optical Rotatory Disper‑sion of the Nitrite and Nitro Chromophores.

J.A.C.S., 85, 2835 (1963)
By C. Djerassi, H. Wolf and E. Bunnenberg

 

425.     Mass Spectrometry in Structural and Stereochemical Problems. XXXI. Aporphines and Related Alkaloids.

J.A.C.S., 85, 2807 (1963)
By M. Ohashi, J.M. Wilson, H. Budzikiewicz, M. Shamma, W.A. Slusarchyk and C. Djerassi

426.     Unusual Chemical Shifts in the Nuclear Magnetic Resonance Spectra of 7- and 11- Keto Steroids.

J.A.C.S., 85, 2810 (1963)
By D.H. Williams, N.S. Bhacca and C. Djerassi

427.     Alkaloid Studies XLIV. The Structure of the Aspidosperma Alkaloid Compactinervine.

Experientia, 19, 467 (1963)
By C. Djerassi, Y. Nakagawa, J.M. Wilson, H. Budzikiewicz, B. Gilbert and L.D. Antonaccio

428.     Mass Spectrometry in Structural and Stereo-chemical Problems. XXXVIII. Contribution to the Structure of Voacamine and Voacorine. Observations on the Mass Spectra of Vobasine and its Derivatives.

Bull. Soc. Chim. France, 1899 (1963)
By H. Budzikiewicz, C. Djerassi, F. Puisieux, F. Percheron and J. Poisson.

429.     Optical Rotatory Dispersion Studies. LXXXIII. Optical Rotatory Dispersion and Circular Dichroism of Episulfides and Trithiocarbonates.

Tetrahedron, 19, 1547 (1963)
By C. Djerassi, H. Wolf, D.A. Lightner, E. Bunnenberg, K. Takeda, T. Komeno and K. Kuriyama

430.     Alkaloid Studies XLII. The Structures of Dichotamine, 1-Acetyl-aspidoalbidine and 1-Acetyl-17-Hydroxy-aspidoalbidine: Three New Alkaloids from Vallesia dichotoma.

Tetrahedron Letters, 1731 (1963)
By K.S. Brown, H. Budzikiewicz and C. Djerassi

431.     Terpenoids LIV. Arborinol, a New Triterpene Type.

Liebigs Ann., 668, 57 (1963)
By H. Vorbrüggen, S.C. Pakrashi and C. Djerassi

432.     Optical Rotatory Dispersion Studies. LXXXVII. Recording and Nomenclature of Circular Dichroism.

Proc. Chem. Soc., 299 (1963)
By C. Djerassi and E. Bunnenberg

433.     Optical Rotatory Dispersion Studies. XCIII. Conformer Populations and Thermodynamic Data from Temperature-Dependent Circular Dichroism Measurements.

J.A.C.S., 85, 3515 (1963)
By A. Moscowitz, K. Wellman and C. Djerassi

434.     Mass Spectrometry in Structural and Stereo-chemical Problems. XXXII. Pentacyclic Tri-­terpenes.

J.A.C.S., 85, 3688 (1963)
By H. Budzikiewicz, J.M. Wilson and C. Djerassi

435.     Optical Rotatory Dispersion Studies. XCIV.
Some Effects of Solvation Upon Optically Active Molecules.

Proc. Natl. Acad. Sci., U.S., 50, 799 (1963)
By A. Moscowitz, K.M. Wellman and C. Djerassi

436.     Alkaloid Studies XLIII. The Alkaloids of Aspidosperma discolor.

Experientia, 19, 585 (1963)
By J.M.Ferreira, B.Gilbert, R.J.Owellen and C.Djerassi

437.     Mass Spectrometry in Structural and Stereo-chemical Problems XLVI. The Mass Spectro­metric Fragmentation of Steroidal Ethylene Ketals and Ethylene Thioketals.

Steroids, 2, 475 (1963)
By G. v.Mutzenbecher, Z.Pelah, D.H. Williams, H.Budzikiewicz and C.Djerassi

438.     Studies in Organic Sulfur Compounds XV. A Novel Base-Catalyzed Rearrangement of a Steroid β-Ketoxanthate.

Steroids, 2, 583 (1963)
By D.A. Lightner and C.Djerassi

439.     Mass Spectrometry in Structural and Stereo-chemical Problems XXIX. Mass Spectra of Isothiocyanates.

Acta Chem.Scand., 17, 2143 (1963)
By A. Kjaer, M.Ohashi, J.M.Wilson and C.Djerassi

440.     Mass Spectrometry in Structural and Stereo-chemical Problems XXXIII. Colchicine Alkaloids.

Tetrahedron, 19, 2225 (1963)
By J.M.Wilson, M.Ohashi, H.Budzikiewicz, F.Šantavў and C.Djerassi

441.     Mass Spectrometry in Structural and Stereo-chemical Problems XXXIV. Aromatic Methyl and Ethyl Ethers.

Tetrahedron, 19, 2233 (1963)
By Z.Pelah, J.M.Wilson, M.Ohashi, H. Budzikiewicz and C.Djerassi

442.     Mass Spectrometry in Structural and Stereo-chemical Problems XXXVI. The Mass Spectra of Stereoisomers of the Sarpagine-Akuammidine Group.

Tetrahedron, 19, 2241 (1963)
By M.Ohashi, H.Budzikiewicz, J.M.Wilson, C.Djerassi, J.Lévy, J.Gosset, J. LeMen and M.-M. Janot

443.     Mass Spectrometry in Structural and Stereo-chemical Problems XXXVII. Tropone and Tropo­lone Derivatives.

Tetrahedron, 19, 2247 (1963)
By J.M.Wilson, M.Ohashi, H.Budzikiewicz, C.Djerassi, S.Itô and T.Nozoe

444.     Synthesis of 15-Oxo-Steroids.

Proc.Chem.Soc., 377 (1963)
By C.Djerassi and G. v.Mutzenbecher

445.     Optical Rotatory Dispersion Studies LXXXIX.Optical Rotatory Dispersion Studies LXXXIX.The Octant Rule and the t-Butyl Group. Synthesis of Steroidal t-Butyl Ketones.

J. Am. Chem. Soc., 86, 78 (1964)
By C. Djerassi, P. A. Hart and E. J. Warawa.

446.     Optical Rotatory Dispersion Studies XC.
The Octant Rule and the Isopropyl Group. Synthesis of Steroidal Isoprapyl Ketones.

J. Am. Chem.. Soc., 86, 85 (1964)
By C. Djerassi, P. A. Hart and C. Beard.

447.     Mass Spectrometry in Structural and Stereo-chemical Problems XXXV. Mass Spectrometric Fragmentation and Hydrogen Transfer Reactions in 16-Keto Steroids.  A Novel Synthesis of Side Chain Labeled Cholestanes.

J. Am. Chem. Soc., 86, 269 (1964)
By C. Beard, J. M. Wilson, H. Budzikiewicz and C. Djerassi.

448.     Mass Spectrometry in Structural and Stereo-chemical Problems XLI.  Isotope Effect in Hydrogen Rearrangement Processes:  The Mass Spectra of Methyl Butyrate and Its γ-Mono-, Di-, and Trideuterio Analogs.

J. Am. Chem.. Soc., 86, 284 (1964)
By D. H. Williams, H. Budzikiewicz and C. Djerassi.

449.     Optical Rotatory Dispersion Studies LXXXVIII.Optical Rotatory Dispersion Studies LXXXVIII.Comparative Optical Rotatory Dispersion and Circular Dichroism Measurements of N-phthaloyl Amines and α-Amino Acids.

Ber., 97, 533 (1964)
By H. Wolf, E. Bunnenberg and C. Djerassi.

450.     Optical Rotatory Dispersion Studies XCI.
The Use of Low-Temperature Circular Dichroism Measurements for “Fingerprinting” of Steroidal Ketones.

J. Am. Chem. Soc., 86, 492 (1964)
By K. M. Wellman, R. Records, E. Bunnenberg and C. Djerassi.

451.     Optical Rotatory Dispersion Studies XCII.
Some Observations on the Conformation of cis-10-Methyl-2-decalones.

J. Am. Chem. Soc., 86, 465 (1964)
By C. Djerassi, J. Burakevich, J. W. Chamberlin, D. Elad, T. Toda and G. Stork.

452.     Mass Spectrometry in Structural and Stereo-chemical Problems XL. The Fragmentation Be­havior of Cyclohexanol and Its Deuteriated Analogs.

Monatsh., 95, 158 (1964)
By H. Budzikiewicz, Z. Pelah and C. Djerassi.

453.     Mass Spectrometry in Structural and Stereo-chemical Problems XLIV. Fragmentation of Monocyclic Ketones.

Monatsh., 95, 166 (1964)
By D. H. Williams, H. Budzikiewicz, Z. Pelah and C. Djerassi.

454.     Mass Spectrometry in Structural and Stereo-chemical Problems XLIII. Mass Spectrometric Fragmentation of Isohexylbromide and Five Deuteriated Derivatives.

J. Am. Chem. Soc., 86, 877 (1964)
By D. H. Williams, C. Beard, H. Bud­zikiewicz and C. Djerassi.

455.     Mass Spectrometry in Structural and Stereo-chemical Problems XLIX. The Mass Spectro­metric Fragmentation of 5α-androstan-ll-one. Synthesis of 19-d1-5α-androstan-11-one.

Steroids, 3, 259 (1964)
By D. H. Williams and C. Djerassi.

456.     Mass Spectrometry in Structural and Stereo-chemical Problems XXXIX. Tropane Alkaloids.

Tetrahedron, 20, 585 (1964)
By E. C. Blossey, H. Budzikiewicz, M. Ohashi, G. Fodor and C. Djerassi.

457.     Mass Spectrometry in Structural and Stereo-chemical Problems XLV. The Mass Spectro­metric Fragmentation Behavior of Isohexyl Cyanide and Its Deuterium Analogs.

J. Am. Chem. Soc., 86, 1386 (1964)
By R. Beugelmans, D. H. Williams, H. Budzikiewicz and C. Djerassi.

458.     Akuammiline--an Alkaloid from Picralima nitida.

Ann. Pharm. France, 22, 35 (1964)
By L. Olivier, J. Levy, J. LeMen, M.-M. Janot, H. Budzikiewicz and C. Djerassi.

459.     Optical Rotatory Dispersion Studies XCV.
Effect of Ring Size in Some Bicyclic Ketones.

J. Am. Chem. Soc., 86, 1755 (1964)
By C. Djerassi and J. E. Gurst.

460.     Mass Spectrometry in Structural and Stereo-chemical Problems LIV. The Structure of Tubulosine, A Novel Alkaloid from Pogonopus tubulosus.

J. Am. Chem. Soc., 86, 1895 (1964)
By P. Brauchli, V. Deulofeu, H. Bud­zikiewicz and C. Djerassi.

461.     Mass Spectrometry in Structural and Stereo‑chemical Problems LII. Structure and Mass Spectrometric Fragmentation of Vindolinine.

Helv. Chim. Acta, 47, 827 (1964)
By C. Djerassi, M. Cereghetti, M. Plat, H Budzikiewicz, M.-M. Janot and J. LeMen.

462.     Macrolide Antibiotics XIII. Nystatin. Biosynthetic Definition of Some Structural Features.

TetrahedronLetters,1485(1964)
By A. J. Birch, C. W. Holzapfel, R. W. Rickards, C. Djerassi, M. Suzuki, J. Westley, J. D. Dutcher and R. Thomas.

463.     Macrolide Antibiotics XIV. Nystatin. Chemistry and Partial Structure of the Antibiotic.

Tetrahedron Letters, 1491 (1964)
By A. J. Birch, C. W. Holzapfel, R. W. Rickards, C. Djerassi, M. Suzuki, J. W. Westley, J. D. Dutcher and P. C. Seidel.

464.     Alkaloid Studies XLVI. The Alkaloids of Aspidosperma Obscurinervium Azembuja: A New Class of Heptacyclic Alka'oids.

J. Am. Chem. Soc., 86, 2451 (1964)
By K. S. Brown and C. Djerassi.

465.     Mass Spectrometry in Structural and Stereo‑chemical Problems XLVII. Some Observations on Mass Spectra of Pseudoindoxyl Alkaloids.

J. Am. Chem. Soc., 86, 2620 (1964)
By N. Finch, I. Hsiu-Chu Hsu, W. I. Taylor, H. Budzikiewicz and C. Djerassi.

466.     Mass Spectrometry in Structural and Stereo-chemical Problems XLVIII. A Study of the Hydrogen Transfer Reactions Accompanying Fragmentation Processes of 1-Keto Steroids. Synthesis of Deuterated 5α-Androstan-l-ones.

J. Am. Chem. Soc., 86, 2623 (1964)
By H. Powell, D. H. Williams, H. Budzikiewicz and C. Djerassi.

467.     Pyrroles and Related Compounds. Part IV.
Mass Spectrometry in Structural and Stereo-chemical Problems. Part XXX. Mass Spectra of Monocyclic Derivatives of Pyrrole.

J. Chem. Soc., 1949 (1964)
By H. Budzikiewicz, C. Djerassi, A. H. Jackson, G. W. Kenner, D. J. Newman and J. M. Wilson.

468.     Mass Spectrometry in Structural and Stereo-chemical Problems. L. Fragmentation and Hydrogen Migration Reactions of α,β-Un­saturated 3-Keto Steroids.

J. Am. Chem. Soc., 86, 2825 (1964)
By R. H. Shapiro and C. Djerassi.

469.     Mass Spectrometry in Structural and Stereo‑chemical Problems. LI. Mass Spectral and Enolization Studies on 7-Keto-5α-androstanes.

J. Am. Chem. Soc., 86, 2832 (1964)
By R. Beugelmans, R. H. Shapiro, Lois J. Durham, D. H. Williams, H. Bud­zikiewicz and C. Djerassi.

470.     Mass Spectrometry in Structural and Stereo-chemical Problems. LIII. Fragmentation and Hydrogen Transfer Reactions of a Typical 3-Keto Steroid, 5α-Androstan-3-one.

J. Am. Chem. Soc., 86, 2837 (1964)
By R. H. Shapiro, D. H. Williams, H. Budzikiewicz and C. Djerassi.

471.     Optical Rotatory Dispersion Studies LXXXVI. Preparation, Anomalous Rotatory Dispersion and Circular Dichroism of Optically Active Trithiones.

Ann. 674, 62 (1964)
By H. Wolf, E. Bunnenberg, C. Djerassi, A. Luttringhaus and A. Stockhausen.

472.     Alkaloid Studies XLVII. The Structures of Five New Aspidosperma Alkaloids Related to Uleine.

Experientia 20, 363 (1964)
By M. Ohashi, J. A. Joule, B. Gilbert and C. Djerassi.

473.     Alkaloid Studies XLV. Mass Spectrometry in Structural and Stereochemical Problems XLII. Some Aspects of the Chemistry and Mass Spectrometry of Uleine.

J. Chem. Soc., 2777 (1964)
By J. A. Joule and C. Djerassi.

474.     Mass Spectrometry in Structural and Stereo-chemical Problems LV. The Mass Spectrometric Fragmentation of Ethylene Ketals.

J. Am. Chem. Soc., 86, 3722 (1964)
By Z. Pelah, D. H. Williams, H. Budzikiewicz and C. Djerassi.

475.     Mass Spectrometry in Structural and Stereo‑chemical Problems LVI. Fragmentation and Hydrogen Transfer Reaction of 4,4-Dimethy1-5α-Androstan-3-one and Related Ketones.

Tetrahedron, 20, 1987 (1964)
By R. H. Shapiro and C. Djerassi.

476.     Optical Rotatory Dispersion Studies XCVI. Applications of Optical Rotatory Dispersion and Circular Dichroism in Stereochemistry.

Proc. Chem. Soc., 314 (1964)
By C. Djerassi.

477.     Mass Spectrometry in Structural and Stereo‑chemical Problems LVII. Isotope Labeling and Mass Spectrometry of Natural Products.

Pure Appl. Chem., 9, 159 (1964)
By C. Djerassi.

478.     Alkaloid Studies XLIX. The Structure of Vallesamin and 0-Acetyl-Vallesamin.

Helv. Chim. Acta, 47, 2072 (1964)
By A. Walser and C. Djerassi.

479.     New Steroids from Cactus Wilcoxia Viperina.

Ber. 97, 3118 (1964)
By C. Djerassi, J. C. Knight and H. Brockmann.

480.     Alkaloid Studies LI. The Structure of Aspidodasycarpine.

Tetrahedron Letters, 3899 (1964)
By M. Ohashi, J. A. Joule and C. Djerassi.

 

481.     Mass Spectrometry in Structural and Stereo-chemical Problems LVIII. A Study of the Fragmentation Processes of Some Lactams.

J. Am. Chem. Soc., 86, 5536 (1964)
By A. M. Duffield, H. Budzikiewicz and C. Djerassi.

482.     Mass Spectrometry in Structural and Stereo-chemical Problems LIX. Mechanism of the Formal Loss of Acetone from 2-0xo-5α-Steroids.

J. Am. Chem. Soc., 86, 5542 (1964)
By J. E. Gurst and C. Djerassi.

483.     Studies in Relation to Biosynthesis XXXV. Macrolide Antibiotics XII. Methymycin.

J. Chem. Soc., 5274 (1964)
By A. J. Birch, C. Djerassi, J. D. Dutcher, J. Majer, D. Perlman, E. Pride, R. W. Rickards and P. J. Thomson.

484.     Optical Rotatory Dispersion Studies XCVII.
Anomalous Rotatory Dispersion and Circular Dichroism Curves Associated with Thionamides. Application to Stereochemical Studies of Carboxylic Acids.

J. Am. Chem. Soc., 87, 51 (1965)
By J. V. Burakevich and C. Djerassi.

485.     Optical Rotatory Dispersion Studies XCVIII. The Conformation of the 17-Acetyl Group in Steroids and Its Correlation with Variable-Temperature Circular Dichroism.

J. Am. Chem. Soc., 87, 60 (1965)
By K. M. Wellman and C. Djerassi.

486.     Optical Rotatory Dispersion Studies XCIX. Super­posed Multiple Cotton Effects of Saturated Ketones and Their Significance in the Circular Dichroism Measurement of (-)-Menthone.

J. Am. Chem. Soc., 87, 66 (1965)
By K. M. Wellman, P. H. A. Laur, W. S. Briggs, A. Moscowitz and C. Djerassi.

487.     Optical Rotatory Dispersion Studies C. Variable-Temperature Circular Dichroism Studies of Ring-Conformational and Rotational Equilibria in Cyclohexanones.

J. Am. Chem. Soc., 87, 73 (1965)
By K. M. Wellman, W.S. Briggs and C. Djerassi.

488.     Optical Rotatory Dispersion Studies CI. Rotatory Dispersion Curves of Cyclopropyl-Ketones and Epoxy-Ketones.

Tetrahedron, 21, 163 (1965)
By C. Djerassi, W. Klyne, T. Norin, G. Ohloff and E. Klein.

489.     Mass Spectrometry in Structural and Stereochemical Problems LX. The Electron Impact Induced Fragmentation of Steroidal Dimethylamines.

J. Am. Chem. Soc., 87, 574 (1965)
By Z. Pelah, D. H. Williams, H. Budzikiewicz and C. Djerassi.

490.     Mass Spectrometry in Structural and Stereochemical Problems LXII. Fragmentation and Hydrogen Transfer Reactions of β-Hydrindanones. Synthesis of Deuterated β-Hydrindanones.

J. Am. Chem. Soc., 87, 580 (1965)
By J. Karliner, H. Budzikiewicz and C. Djerassi.

491.     Studies in Organic Sulfur Compounds XVI. Synthesis and Reactions of Steroid Episulfides.

Tetrahedron, 21, 583 (1965)
By D. A. Lightner and C. Djerassi.

492.     Mass Spectrometry in Structural and Stereochemical Problems LXIII. Hydrogen Rearrangements Induced by Electron Impact on N-n-butyl- and N-n-pentylpyrroles.

J. Am. Chem. Soc., 87, 805 (1965)
By A. M. Duffield, R. Beugelmans, H. Budzikiewicz, D. A. Lightner, D. H. Williams and C. Djerassi.

493.     Mass Spectrometry in Structural and Stereochemical Problems LXIV. A Study of the Fragmentation Processes of Some Cyclic Amines.

J. Am. Chem. Soc., 87, 810 (1965)
By A. M. Duffield, H. Budzikiewicz, D. H. Williams and C. Djerassi.

494.     Mass Spectrometry in Structural and Stereochemical Problems LXV. Synthesis and Fragmentation Behavior of 15-Keto Steroids. The Importance of Interatomic Distance in the McLafferty Rearrangement.

J. Am. Chem. Soc., 87, 817 (1965)
By C. Djerassi, G. von Mutzenbecher, J. Fajkos, D. H. Williams and H. Budzikiewicz.

495.     The Structure of the Cactus Sterol Peniocerol (cholest-8-ene-3β,6α-diol).

J. Chem. Soc., 1160 (1965)
By C. Djerassi, R. D. H. Murray and R. Villotti.

496.     Structure of Tomatillidine.

J. Org. Chem., 30, 754 (1965)
By E. Bianchi, C. Djerassi, H. Budzikiewicz and Y. Sato.

497.     Mass Spectrometry in Structural and Stereochemical Problems LXVI. Mass Spectral Fragmentation of 6,7-Dimethoxycoumarin.

J. Org. Chem., 30, 955 (1965)
By R. H. Shapiro and C. Djerassi.

498.     Magnetic Circular Dichroism Studies: A Preliminary Report.

Proc. Natl. Acad. Sci., 53, 579 (1965)
By D. A. Schooley, E. Bunnenberg and C. Djerassi.

499.     Mass Spectrometry in Structural and Stereochemical Problems LXIX. Methyl Migration in an Electron Impact Induced Fragmentation.

J. Am. Chem. Soc., 87, 1398 (1965)
By F. Komitsky, Jr., J. E. Gurst and C. Djerassi.

500.     Alkaloid Studies LII. The Alkaloids cf Vallesia Dichotoma.

Helv. Chim. Acta, 48, 391 (1965)
By A. Walser and C. Djerassi.

501.     Structure and Absolute Configuration of Picraline, Pseudo-akuammigine, Akuammine and Akuammiline.

Bull. Soc. Chim, France, 868 (1965)
By L. Olivier, J. Levy, J. LeMen, M.-M Janot, H. Budzikiewicz and C. Djerassi.

502.     Mass Spectrometry in Structural and Stereochemical Problems LXI. The Mass Spectrometric Fragmentation Behavior of Anthracyclinones.

Ber., 98, 1260 (1965)
By H. Brockmann, Jr., H. Budzikiewicz, C. Djerassi, H. Brockmann and J. Niemeyer.

503.     Alkaloid Studies L. The Alkaloids of Twelve Aspidosperma Species.

Tetrahedron, 21, 1141 (1965)
By B. Gilbert, A. P. Duarte, Y. Nakagawa, J. A. Joule, S. E. Flores, J. A. Brissolese, J. Campello, E. P. Carrazzoni, R. J. Owellen, E. C. Blossey, K. S. Brown and C. Djerassi.

504.     Optical Rotatory Dispersion Studies CII. Optical Rotatory Dispersion and Circular Dichroism of Thiolacetates.

Tetrahedron, 21, 1203 (1965)
By K. Takeda, K. Kuriyama, T. Komeno, D. A. Lightner, R. Records and C. Djerassi.

505.     Optical Rotatory Dispersion Studies CIII. Optical Rotatory Dispersion and Circular Dichroism of Twisted Sulfur-Containing Chromophoric Systems.

Tetrahedron, 21, 1581 (1965)
By D. A. Lightner, C. Djerassi, K. Takeda, K. Kuriyama and T. Komeno.

506.     Mass Spectrometry in Structural and Stereochemical Problems LXX. A Study of the Fragmentation Processes of Some Five-Membered N-Alkyl Lactams and N-Alkyl Succinimides.

J. Am. Chem. Soc., 87, 2913 (1965)
By A. M. Duffield, H. Budzikiewicz and C. Djerassi.

507.     Mass Spectrometry in Structural and Stereochemical Problems LXXI. A Study of the Influence of Different Heteroatoms on the Mass Spectrometric Fragmentation of Five-Membered Heterocycles.

J. Am. Chem. Soc., 87, 2920 (1965)
By A. M. Duffield, H. Budzikiewicz and C. Djerassi.

508.     Mass Spectrometry in Structural and Stereochemical Problems LXXII. A Study of the Fragmentation Processes of Some Tobacco Alkaloids.

J. Am. Chem. Soc., 87, 2926 (1965)
By A. M. Duffield, H. Budzikiewicz and C. Djerassi.

 

509.     Mass Spectrometry in Structural and Stereochemical Problems LXVII. Retro-Diels-Alder Decomposition of Organic Molecules under Electron Impact.

Tetrahedron, 21, 1855 (1965)
By H. Budzikiewicz, J. I. Brauman and C. Djerassi.

510.     Mass Spectrometry in Structural and Stereochemical Problems LXVIII. Mass Spectrometric Investigations of Hashish Constituents.

Tetrahedron, 21, 1881 (1965)
By H. Budzikiewicz, R. T. Aplin, D. A. Lightner, C. Djerassi, R. Mechoulam and Y. Gaoni.

511.     Alkaloid Studies LIII. The Structures of Nine New Alkaloids from Aspidosperma Dasycarpon A. DC.

Tetrahedron, 21, 1717 (1965)
By J. A. Joule, M. Ohashi, B. Gilbert and C. Djerassi.

512.     Mass Spectrometry in Structural and Stereochemical Problems LXXIII. The Negative Ion Mass Spectra of Some Simple Organic Compounds.

J. Am. Chem. Soc., 87, 3180 (1965)
By R. T. Aplin, H. Budzikiewicz and C. Djerassi.

513.     Mass Spectrometry in Structural and Stereochemical Problems LXXVIII. Steroidal Δ4-3,6-Diketones.

Steroids, 6, 1 (1965)
By C. Djerassi, J. Karliner and R. T. Aplin.

514.     Alkaloid Studies LIV. Structure of Deoxytubulosine and Interconversion with Tubulosine.

Chem. Commun., 317 (1965)
By H. Monteiro, H. Budzikiewicz, C. Djerassi, R. R. Arndt and W. H. Baarschers.

515.     Recent Applications of Mass Spectrometry in Steroid Chemistry.

Proceed. 1st Internat. Congress on Hormonal Steroids, Academic Press, New York, 1965, Vol. 2, pp. 3-10
By C. Djerassi, H. Budzikiewicz and J. M. Wilson.

516.     Terpenoids LVI. The Complete Structure of the Triterpene Arborinol.

Tetrahedron Letters, 39, 3433 (1965)
By Olga Kennard, L. Riva di Sanseverino, H. Vorbrüggen and C. Djerassi.

517.     The Bromination of 15-Keto Steroids.

Steroids, 6, 239 (1965)
By C. Djerassi, J. Fajkos and A. R. Van Horn.

518.     Alkaloid Studies XLVIII. The Structure of Apparicine, a Novel Aspidosperma Alkaloid.

J. Chem. Soc., 4773 (1965)
By J. A. Joule, H. Monteiro, L. J. Durham, B. Gilbert and C. Djerassi.

 

519.     New Alkaloids from Vinca Major.

Bull. Soc. Chim., France, 2497 (1965)
By M. Plat, R. Lemay, J. LeMen, M.-M. Janot, C. Djerassi and H. Budzikiewicz.

520.     Mass Spectrometry in Structural and Stereochemical Problems LXXVI. The Mass Spectra of Porphyrins.

Tetrahedron, 21, 2913 (1965)
By A. H. Jackson, G. W. Kenner, K. M. Smith, R. T. Aplin, H. Budzikiewicz and C. Djerassi.

521.     Mass Spectrometry in Structural and Stereochemical Problems LXXXIX. Exchange of Enolizable Hydrogens in the Inlet System of the Mass Spectrometer.

Chem. Ind. (London), 1697 (1965)
By H. Budzikiewicz and C. Djerassi.

522.     Mechanism of Reduction of Tosylhydrazones with Complex Metal Hydrides.

Ber., 98, 3236 (1965)
By M. Fischer, Z. Pelah, D. H. Williams and C. Djerassi.

523.     Mass Spectrometry in Structural and Stereochemical Problems LXXIV. A Study of the Fragmentation of N-Acylpyrrolidines.

J. Am. Chem. Soc., 87, 4554 (1965)
By A. M. Duffield and C. Djerassi.

524.     Mass Spectrometry in Structural and Stereochemical Problems LXXV. Occurrence of Alkyl Rearrangements in the Fragmentation of Some Formaldehyde Acetals.

J. Am. Chem. Soc., 87, 4559 (1965)
By P. Brown, C. Djerassi, G. Schroll, H. J. Jakobsen and S.-O. Lawesson.

525.     Conformational Studies of cis-lO-Methyl-2-Decalones.

Experientia, 21, 565 (1965)
By W. G. Dauben, R. M. Coates, N. D. Vietmeyer, L. J. Durham and C. Djerassi.

526.     Alkaloid Studies LV. 19-Dehydroyohimbine, a Novel Alkaloid from Aspidosperma Pyricollum.

Experientia, 21, 566 (1965)
By R. R. Arndt and C. Djerassi.

527.     Mass Spectrometry in Structural and Stereochemical Problems LXXIX. Aliphatic and Alicyclic Nitro Compounds.

J. Am. Chem. Soc., 87, 4888 (1965)
By R. T. Aplin, M. Fischer, D. Becher, H. Budzikiewicz and C. Djerassi.

528.     Mass Spectrometry in Structural and Stereochemical Problems LXXXI. Stereospecificity in a Hydrogen-Transfer Reaction Characteristic of 6-Keto Steroids.

J. Am. Chem. Soc., 87, 4892 (1965)
By C. Djerassi, R. H. Shapiro and M. Vandewalle.

529.     Mass Spectrometry in Structural and Stereochemical Problems LXXXII. A Study of the Fragmentation of Some Amaryllidaceae Alkaloids.

J. Am. Chem. Soc., 87, 4902 (1965)
By A. M. Duffield, R. T. Aplin, H. Budzikiewicz, C. Djerassi, C. F. Murphy and W. C. Wildman.

530.     Mass Spectrometry in Structural and Stereochemical Problems XCIV. Steroidal Δ16 -20 Ketones and Δ9(II)-12-Ketones.

Steroids, 6, 493 (1965)
By L. Tökés and C. Djerassi.

531.     Mass Spectrometry in Structural and Stereochemical Problems XCVIII. Absence of Methyl Migration in 2,2,8,8-Tetramethylnonan-5-one.

Chem. Comm., 578 (1965)
By R. R. Arndt and C. Djerassi.

532.     Studies in Organic Sulfur Compounds XVII. The Synthesis of Previously Inaccessible Acylated Enamines by Desulfur­ization of Thiazolidines.

J. Chem. Soc., 6253 (1965)
By N. S. Crossley, C. Djerassi and M. A. Kielczewski.

533.     Optical Rotatory Dispersion Studies CIV. Low Temperature Circular Dichroism Behavior of Various Chromophoric Derivatives of Alcohols and Amines.

Tetrahedron, 21, 3455 (1965)
By W. S. Briggs and C. Djerassi.

534.     Mass Spectrometry in Structural and Stereochemical Problems LXXX. Mass Spectrometric Fragmentation of Nitrophenylhydrazones.

Nature, 208, 1314 (1965)
By C. Djerassi and S. D. Sample.

535.     Mass Spectrometry in Structural and Stereochemical Problems LXXXIV. The Nature of the Cyclic Transition State in Hydrogen Rearrangements of Aliphatic Ethers.

J. Am. Chem. Soc., 87, 5747 (1965)
By C. Djerassi and C. Fenselau.

536.     Mass Spectrometry in Structural and Stereochemical Problems LXXXV. The Nature of the Cyclic Transition State in Hydrogen Rearrangements of Aliphatic Amines.

J. Am. Chem. Soc., 87, 5752 (1965)
By C. Djerassi and C. Fenselau.

537.     Mass Spectrometry in Structural and Stereochemical Problems LXXXVI. The Nature of the Hydrogen Transfer Reactions in Butyl Propionate, Benzoate and Phthalate.

J. Am. Chem. Soc., 87, 5756 (1965)
By C. Djerassi and C. Fenselau.

 

538.  Mass Spectrometry in Structural and Stereochemical Problems. Two

      Deuterated Isothiocyanates.

                  Acta. Chem. Scand., 19, 2438 (1965)

         By E. Bach, A. Kjaer, R. H. Shapiro and C. Djerassi.

 

539.     Mass Spectrometry in Structural and Stereochemical Problems LXXVII. Influence of Restricted Rotation as well as other Energetic Factors on the McLafferty Rearrangement of Ketones.

Chem. Ber., 99, 35 (1966)
By H. Fritz, H. Budzikiewicz and C. Djerassi.

540.     Mass Spectrometry in Structural and Stereochemical Problems C. Suppression of McLafferty Rearrangements in the Mass Spectrometric Fragmentation of Even-Electron Systems.

Chem. Comm., 12 (1966)
By C. Djerassi, M. Fischer and J. B. Thomson.

541.     Mass Spectrometry in Structural and Stereochemical Problems LXXXVIII. Rearrangements of Simple Terpenes on Electron Impact.

J. Org. Chem., 31, 115 (1966)
By D. S. Weinberg and C. Djerassi.

542.     Mass Spectrometry in Structural and Stereochemical Problems XCIII. Further Observations on the Importance of Interatomic Distance in the McLafferty Rearrangement. Synthesis and Fragmentation Behavior of Deuterium Labeled 12-Keto Steroids.

J. Am. Chem. Soc., 88, 536 (1966)

By C. Djerassi and L. Tökés.

543.     Terpenoids LV. Studies in the Chemistry of the Eremophilane Sesquiterpenes.

Tetrahedron, 22, 337 (1966)
By L. H. Zalkow, A. M. Shaligram, Shih-En Hu and C. Djerassi.

544.     The Structure of the Cactus Sterol Macdougallin (14α-Methyl-Δ8-cholestene-3β, 6α-diol). A Novel Link in Sterol Biogenesis.

J. Am. Chem. Soc., 88, 790 (1966)
By J. C. Knight, D. I. Wilkinson and C. Djerassi.

545.     Mass Spectrometry in Structural and Stereochemical Problems CIII. Electron Impact Induced Methyl Migration in Some 2-Arylidene-l-Decalones.

J. Am. Chem. Soc., 88, 860 (1966)
By C. Djerassi, A. M. Duffield, F. Komitsky, Jr. and L. Tökés.

546.     Steroid Oral Contraceptives.

Science, 151, 1055 (1966)
By C. Djerassi.

 

547.     Mass Spectrometry in Structural and Stereochemical Problems LXXXVII. Possibility of Methyl Migrations in Aromatic Compounds.

Chem. Ber., 99, 750 (1966)
By M. Fischer and C. Djerassi.

548.     Mass Spectrometry in Structural and Stereochemical Problems XCI. The Electron Impact Induced Elimination of Water from 3-Hydroxy Steroids.

J. Org. Chem., 31, 710 (1966)
By J. Karliner, H. Budzikiewicz and C. Djerassi.

549.     Optical Rotatory Dispersion Studies CV. The Absolute Configuration of Rosonono and Rosolo Lactones.

J. Chem. Soc. (C), 624 (1966)
By C. Djerassi, B. Green, W. G. Whalley and C. G. DeGrazia.

550.     Mass Spectrometry in Structural and Stereochemical Problems LXXXIII. Partial Structure of Vobtusine.

Tetrahedron, 22, 1075 (1966)
By J. Poisson, M. Plat, H. Budzikiewicz, L. J. Durham and C. Djerassi.

551.     Alkaloid Studies LVI. The Constitution of Vallesiachotamine.

J. Am. Chem. Soc., 88, 1792 (1966)
By C. Djerassi, H. J. Monteiro, A. Walser and L. J. Durham.

552.     Mass Spectrometry in Structural and Stereochemical Problems CIX. The Non-Specificity of Hydrogen Re­arrangements in Aryl Alkyl Ethers.

J. Am. Chem. Soc., 88, 1840 (1966)

By J. K. MacLeod and C. Djerassi.

553.     Mass Spectrometry in Structural and Stereochemical Problems CX. The Course of the Electron Impact Induced Dehydrochlorination of Primary Alkyl Chlorides.

Chem. Comm., 193 (1966)
By A. M. Duffield, S. D. Sample and C. Djerassi.

554.     Mass Spectrometry in Structural and Stereochemical Problems XCII. Further Studies on the McLafferty Rearrangement of Aliphatic Ketones

Tetrahedron, 22, 1391 (1966)
By H. Budzikiewicz, C. Fenselau and C. Djerassi

555.     Mass Spectrometry in Structural and Stereochemical Problems CVIII. Dueterium Isotope Effects in Site-Specific Mass Spectrometric Rearrangement Processes

Tetrahedron Letters, 19, 2183 (1966)
By J. K. MacLeod and Carl Djerassi

556.     Mass Spectrometry in Structural and Stereochemical Problems CI. A Study of the Fragmentation of Some Azabicyclo Lactams

J. Org. Chem., 31, 1599 (1966)
By A. M. Duffield, Carl Djerassi, Lawrence Wise and Leo A. Paquette

557.     Mass Spectrometry in Structural and Stereochemical Problems CIV. The Nature of the Cyclic Transition State in Hydrogen Rearrangements of Aliphatic Sulfides

J. Am. Chem. Sac., 88, 1937 (1966)
By Shelia Sample and C. Djerassi

558.     Mass Spectrometry in Structural and Stereochemical Problems XCV. A Study of the Fragmentation Processes of Same Pyridones on Electron Impact

Acta Chem. Scand., 20, 361 (1966)
By A. M. Duffield, C. Dierassi, G. Schroll and S.-0. Lawesson

559.     Mass Spectrometry in Structural and Stereochemical Problems XCVI. Mass Spectrometric Fragmentation of Azomethines

Chem. Ber., 99, 1541 (1966)
By M. Fischer and C. Djerassi

560.     Mass Spectrometry in Structural and Stereochemical Problems CV1. Occurrence of Alkyl and Aryl Rearrangements in the Fragmentation of Some Organic Carbonates

J. Am, Chem. Soc., 88, 2469 (1966)
By Peter Brown and Carl Djerassi

561.     Terpenoids LVII. Mass Spectrometry in Structural and Stereochemical Problems CV. Mass Spectral and Nuclear Magnetic Resonance Studies of Pentacyclic Triterpene Hydrocarbons

J. Org. Chem., 31, 1945 (1966)
By J. Karliner and C. Djerassi

562.     Alkaloid Studies LVII. Indole Alkaloids of the Aspidospermine Class. "Phytochimie et Plantes Medicinales des Terres du Pacifique".

C.N.R.S., Paris, (1966), pp. 191-204
By C. Djerassi.

563.     Mass Spectrometry in Structural and Stereochemical Problems CVII. Fragmentation Behavior of Semi­carbazones.

Chem. Ger., 99, 2284 (1966)

By D. Becher, S. D. Sample and C. Djerassi.

564.     Mass Spectrometry in Structural and Stereochemical Problems CXIX. Interaction of Remote Functional Groups in Mass Spectrometry.

J. Am. Chem. Soc., 88, 3883 (1966)
By M. M. Green, D. S. Weinberg and C. Djerassi.

565.     Mass Spectrometry in Structural and Stereochemical Problems CXIV. Electron Impact Induced Rearrange­ment of Thiocarbonates, Carbamates and Thio­carbamates.

J. Am. Chem. Soc., 88, 4049 (1966)
By J. B. Thomson, P. Brown and C. Djerassi.

 

566.     Mass Spectrometry in Structural and Stereochemical Problems XCVII. A Study of the Fragmentation Processes of Oximes.

Tetrahedron, 22, Suppl. 7, 145 (1966)
By D. Goldsmith, D. Becher, S. Sample and C. Djerassi.

567.     Mass Spectrometry in Structural and Stereochemical Problems CII. Study on the Structure of Cincho­phyllamine and Isocinchophythamine.

Bull. Soc. Chim. France, 2309 (1966)
By P. Potier, C. Korn, J. LeMen, M.-M. Janot, H. Budzikiewicz and C. Djerassi.

568.     Optical Rotatory Dispersion Studies CVI. Low Temperature Circular Dichroism of Various Polysub­stituted Cyclopentanones.

Bull. Soc. Chim. France, 2378 (1966)
By C. Djerassi, R. Records, C. Ouannes and J. Jacques.

569.     Selective Reduction of Steroids by Homogeneous Catalytic Hydrogenation.

J. Am. Chem. Soc., 88, 4537 (1966)
By C. Djerassi and J. Gutzwiller.

570.     Mass Spectrometry in Structural and Stereochemical Problems CXI. The Mass Spectrometric Fragmentation of Substituted Naphthoquinones and its Application to Structural Elucidation of Echinoderm Pigments.

J. Org. Chem., 31, 3650 (1966)
By D. Becher, C. Djerassi, R. E. Moore, H. Singh and P. J. Scheuer.

571.     Mass Spectrometry in Structural and Stereochemical Problems CXII. Fragmentation of Two Bicyclic Amines on Electron Impact.

J. Org. Chem., 31, 3832 (1966)
By D. S. Weinberg and C. Djerassi.

572.     Mass Spectrometry in Structural and Stereochemical Problems CXIII. Specific Hydrogen Rearrangements in the Fragmentation of Hydrazones.

J. Org. Chem., 31, 3661 (1966)
By D. Goldsmith and C. Djerassi.

573.     Mass Spectrometry in Structural and Stereochemical Problems CXVIII. Aliphatic Epoxides.

Tetrahedron, Suppl. 8, Part 1, 241 (1966)
By P. Brown, J. Kossanyi and C. Djerassi.

574.     Magnetic Circular Dichroism Studies II. Preliminary Results with Some Aromatic Compounds.

Proc. Natl. Acad. Sci., 56, 1377 (1966)
By D. A. Schooley, E. Bunnenberg and C. Djerassi.

575.     Mass Spectrometry in Structural and Stereochemical Problems CXXI. Fragmentation and Hydrogen Rearrangements in 4-Ketosteroids.

Helv. Chim. Acta, 49, 2108 (1966)
By J. Gutzwiller and C. Djerassi.

576.     Mass Spectrometry in Structural and Stereochemical Problems CXV. Mass Spectra of tert-Butyl Ethers.

Arkiv Kemi, 26, 199 (1966)
By H. J. Jakobsen, G. Schroll, S.-O. Lawesson, D. A. Lightner, A. M. Duffield and C. Djerassi.

577.     Mass Spectrometry in Structural and Stereochemical Problems CXVI. The Fragmentation of Some Orthoesters and Orthothioesters upon Electron Impact.

Arkiv Kemi, 26, 279 (1966)
By G. Schroll, H. J. Jakobsen, S.-O. Lawesson, P. Brown and C. Djerassi.

578.     Mass Spectrometry in Structural and Stereochemical Problems CXX. Electron-Impact-Induced Fragmentation Processes of Methoxycarbonylhydrazones.

J. Org. Chem., 31, 4050 (1966)
By J. K. MacLeod, D. Becher and C. Djerassi.

579.     Optical Rotatory Dispersion Studies CVIII. Anomalous Optical Rotation and Circular Dichroism of N-Thioacylated α-Amino Acids and Derivatives in Various Solvents.

Acta Chem. Scand., 20, 2781 (1966)
By E. Bach, A. Kjaer, R. Dahlbom, T. Walle, B. Sjöberg, E. Bunnenberg, C. Djerassi and R. Records.

580.     Optical Rotatory Dispersion Studies CIX, An Octant Rule for the Azide Chromophore,

J. Am. Chem. Soc., 89, 347 (1967)
By C. Djerassi, A. Moscowitz, K. Ponsold and G. Steiner.

581.     Mass Spectrometry in Structural and Stereochemical Problems XC. Mass Spectra of Linear Di-, Tri- and Tetrapyrrolic Compounds.

Tetrahedron, 23, 603 (1967)
By A. N. Jackson, G, W. Kenner, H. Budzikiewicz, C. Djerassi and J. M. Wilson.

582.     Terpenoids LVIII. Griseogenin, a New Triterpenoid Sapogenin of the Sea Cucumber Halodeima Grisea L.

Tetrahedron, 23, 761 (1967)
By B. Tursch, I. S. D. Guimaraes, B. Gilbert, R. T. Aplin, A. M. Duffield and C. Djerassi.

583.     Terpenoids LIX. The Structure of Jegosapogenol.

Tetrahedron Letters, 365 (1967)
By T. Nakano, M. Hasegawa, T. Fukumaru, S. Tobinaga, C. Djerassi, L. J. Durham and H. Budzikiewicz.

584.     Optical Rotatory Dispersion Studies CVII. Factors Governing the Relative Stability of Hydrindanones. Syntheses of 17-Alkyl-15-keto Steroids.

J. Am. Chem. Soc., 89, 651 (1967)
By A. R. Van Horn and C. Djerassi.

585.     Mass Spectrometry in Structural and Stereochemical Problems CXXIX. The Course of the Electron Impact‑induced Elimination of Hydrogen Sulphide from Aliphatic Thiols.

Chem. Comm., 109 (1967)
By A. M. Duffield, W. Carpenter and C. Djerassi,

586.     Mass Spectrometry in Structural and Stereochemical Problems CXXVIII. Further Studies on the Mass Spectrometry of 15-Keto Steroids.

Steroids, 9, 163 (1967)
By A. R. Van Horn and C. Djerassi.

587.     Deuterium Isotope Effect in the Photochemistry of a 20-0xo-Steroid Analog

Chem. and Ind., 358 (1967)
By C. Djerassi and B. Zeeh.

588.     Mass Spectrometry in Structural and Stereochemical Problems. CXXIV. Mass Spectral Fragmentation of Alkylquinolines and Isoquinolines.

J. Org. Chem., 32, 997 (1967)
By Shelia D. Sample, D. A. Lightner, O. Buchardt and C. Djerassi.

589.     Mass Spectrometry in Structural and Stereochemical Problems CXXV. Mass Spectrometry of Some Steroid Trimethylsilyl Ethers.

J. Org. Chem., 32, 1005 (1967)
By John Diekman and C. Djerassi.

590.     Mass Spectrometry in Structural and Stereochemical Problems CXXVI. Synthesis and Fragmentation Behavior of Deuterium-Labeled 17-Keto Steroids.

J. Org. Chem., 32, 1012 (1967)
By L. Tökes, R. T. LaLonde and C. Djerassi.

591.     Mass Spectrometry in Structural and Stereochemical Problems CXXVII. Synthesis and Fragmentation Be­havior of Deuterium-Labeled 20-Keto Steroids.

J. Org. Chem., 32, 1020 (1967)
By L. Tökes, R. T. LaLonde and C. Djerassi.

592.     Mass Spectrometry in Structural and Stereochemical Problems CXXII. Possible Operation of Tautomerism Before and After Electron-Impact Induced Fragmentation of Molecular Ions.

Tetrahedron, 23, 2095 (1967)
By J. K. MacLeod, J. B. Thomson and C. Djerassi,

593.     Optical Rotatory Dispersion Studies CX. On the Stereo-chemistry of Some Optically Active Cyclobutanones.

Bull. Soc. Chim. France, 950 (1967)
By J. Gore, C. Djerassi and J.-M. Conia.

 

 

 

594.     Mass Spectrometry in Structural and Stereochemical Problems CXXX. A Study of Electron Impact Induced Migratory Aptitudes.

J. Am. Chem. Soc., 89, 2711 (1967)
By P. Brown and C. Djerassi.

595.     Mass Spectrometry in Structural and Stereochemical Problems CXXXIII. Electron Impact Induced Rearrange­ment Reactions of Organic Molecules.

Angew. Chem. Intern. Ed. Eng., 6, 477 (1967)
By P. Brown and C. Djerassi.

595a. Elektronenstoss-induzierte Umlagerungen organischer Moleküle.

Angew. Chem., 79, 481 (1967)
By P. Brown and C. Djerassi.

596.     Mass Spectrometry in Structural and Stereochemical Problems CXXXI. The Mass Spectrometric Fragmentation of Thiuramdisulfides.

J. Org. Chem., 32, 2054 (1967)
By J. 0. Madsen, Sven-Olov Lawesson, A. M. Duffield and C. Djerassi.

597.     Electron Impact Induced Fragmentation of Organic Molecules

Proc. Symp. "Some Newer Physical Methods in Structural Chemistry, Mass Spectrometry, Optical Rotatory Dispersion and Circular Dichroism," United Trade Press, London (1967), pp. 2-6.
By C. Djerassi.

598.     Some Applications of Newer Physical Methods in the Steroid Field.

Proc. Second Internat. Congress Hormonal Steroids, Excerpta Medica Foundation, Amsterdam, 1967, pp. 3-15
By C. Djerassi.

599.     Methods for Selective Deuteration of Nuclear Positions in the Steroid Field.

Proc. Second Internat. Congress Hormonal Steroids, Excerpta Medica Foundation, Amsterdam, 1967, pp. 261-268
By C. Djerassi.

600.     Mass Spectrometry in Structural and Stereochemical Problems CXVII. Aliphatic α,β-Epoxyketones.

Tetrahedron, 23, 2893 (1967)
By W. Reusch and C. Djerassi.

601.     The Photolysis of 1-Phenyl and 1-Cyano Substituted Iso­quinoline Iso-quinoline N-oxides to Benz[f]-1,3-Oxazepines.

Tetrahedron Letters, 2741 (1967)
By O. Buchardt, C. Lohse, A. M. Duffield and C. Djerassi.

602.     Mass Spectrometry in Structural and Stereochemical ­Problems. CXXXII. Electron Impact Induced Alkyl and Aryl Rearrangements in α,β-Unsaturated Cyclic Ketones.

J. Am. Chem. Soc., 89, 4765 (1967)
By R. L. N. Harris, F. Komitsky, Jr. and C. Djerassi.

603.     Mass Spectrometry in Structural and Stereochemical Problems. CXXXIV. Electron Impact Induced Alkyl and Aryl Rearrangements in α-Arylidene Cyclic Ketones.

J. Am. Chem. Soc., 89, 4775 (1967)
By R. L. N. Harris, F. Komitsky, Jr., and C. Djerassi.

604.     Macrolide Antibiotics XV. Nystatin - The Structure of the Aglycone.

Tetrahedron Letters, 3745 (1567)
By M. Ikeda, M. Suzuki and C. Djerassi.

605.     Mass Spectrometry in Structural and Stereochemical Problems. CXXXVI. Primary Hydrogen Isotope Effects in the McLafferty Rearrangement.

J. Am. Chem. Soc., 89, 5182 (1967)
By J. K. MacLeod and C. Djerassi.

606.     Mass Spectrometry in Structural and Stereochemical Problems. CXXXVII. Examples of Interaction of Remote Functional Groups after Electron Impact.

J. Am. Chem. Soc., 89, 5190 (1967)
By M. M. Green and C. Djerassi.

607.     Terpenoids LX. The Structures of the Cactus Triterpene Lactones Stellatogenin and Thurberogenin.

J. Org. Chem., 32, 3150 (1967)
By M. Marx, J. Leclercq, B. Tursch and C. Djerassi.

608.     Alkaloids of Callichilia subsessilis. Cailichiline.

Bull. Soc. Chin. France, 2669 (1967)
By M. Plat, N. Kunesch, J. Poisson, C. Djerassi and H. Budzikiewicz.

609.     Mass Spectrometry in Structural and Stereochemical Problems. CXXXV. Fragmentation and Synthesis of α-Hydrindanones and Deuterated Analogs.

Chem. Ber., 100, 3204 (1967)
By B. Zeeh, G. Jones and C. Djerassi.

610.     Mass Spectrometry in Structural and Stereochemical Problems. CXLVII. The Course of the Electron Impact Induced Elimination of Hydrogen Fluoride in Primary Alkyl Fluorides.

Chem. Comm., 1022 (1567)
By W. Carpenter, A. M. Duffield and C. Djerassi.

611.     Mass Spectrometry in Structural and Stereochemical Problems. CXL. Competitive McLafferty Rearrangements in Bifunctional Compounds.

J. Org. Chem., 32, 3485 (1967)
By J. K. MacLeod and C. Djerassi.

612.     Mass Spectrometry in Structural and Stereochemical Problems. CXLIII. Unusual Fragmentations in the Mass Spectra of Some Aliphatic Ethers.

J. Am. Chem. Soc., 89, 6164 (1967)
By W. Carpenter, A. M. Duffield and C. Djerassi.

 

613.     Mass Spectrometry in Structural and Stereochemical Problems. CXLV. Factors Governing the Preferential Loss of Small versus Large Radicals in Ketones, Schiff Bases and Ethers.

J. Am. Chem. Soc., 89, 6167 (1967)
By W. Carpenter, A. M. Duffield and C. Djerassi.

614.     Magnetic Circular Dichroism Studies. III. Investigation of Some Optically Active Chlorins.

J. Am. Chem. Soc., 89, 6170 (1967)
By B. Briat, D. A. Schooley, R. Records, E. Bunnenberg and C. Djerassi.

615.     Alkaloid Studies. LVIII. The Alkaloids of Six Aspidosperma Species.

Phytochemistry, 6, 1653 (1967)
By R. R. Arndt, S. H. Brown, N. C. Ling, P. Roller, C. Djerassi, J. M. Ferreira F., B. Gilbert, E. C. Miranda and S. E. Flores.

616.     Mass Spectrometry in Structural and Stereochemical Problems. CXLI. Electron Impact Induced Fragmentations and Rearrangements of Trimethylsilyl Ethers, Amines, and Sulfides.

J. Org. Chem., 32, 3904 (1967)
By J. Diekman, J. G. Thomson and C. Djerassi.

617.     Mass Spectrometry in Structural and Stereochemical Problems. CLI. Further Studies on the Mass Spectrometry of 17-Keto Steroids.

Steroids, 10, 653 (1967)
By G. Jones and C. Djerassi.

618.     Magnetic Circular Dichroism Studies. IV. Investigation of Some Annulene Derivatives.

J. Am. Chem. Soc., 89, 7062 (1967)
By B. Briat, D. A. Schooley, R. Records, E. Bunnenberg and C. Djerassi.

619.     Mass Spectrometry in Structural and Stereochemical Problems. CXXXVIII. Fragmentation Processes of Some Thiocarbonyl Compounds on Electron Impact.

Acta Chem. Scand., 21, 2167 (1967)
By A. M. Duffield, C. Djerassi and J. Sandström

620.     A High Priority? Research Centers in Developing Nations.

Bulletin of the Atomic Scientists, Jan. 1968, pp. 23-27
By C. Djerassi.

621.     Mass Spectrometry in Structural and Stereochemical Problems. CXLIV. Unusual Fragmentations of the Low-Voltage Spectra of Aliphatic Ketones.

J. Am. Chem. Soc., 90, 160 (1968)
By W. Carpenter, A. M. Duffield and C. Djerassi.

 

 

 

 

622.     Mass Spectrometry in Structural and Stereochemical Problems. CXLVI. Mass Spectrometric Fragmentations Typical of Sterols with Unsaturated Side Chains.

J. Org. Chem., 33, 305 (1968)
By S. G. Wyllie and C. Djerassi.

623.     Mass Spectrometry in Structural and Stereochemical Problems. CXLIX. The Question of Ring Expansion in the Fragmentation of 13C-Labeled Nitrogen Heterocycles.

J. Am. Chem. Soc., 90, 678 (1968)
By M. Marx and C. Djerassi.

624.     Homogeneous Catalytic Hydrogenation and Deuteration of Steroids.

Chem. Ber., 101, 58 (1968)
By W. Voelter and C. Djerassi.

625.     Terpenoids LXI. The Structure of a New Triterpene, Putranjivadione.

Tetrahedron, 24, 1205 (1968)
By P. Sengupta, A. K. Chakraborty, A. M. Duffield, L. J. Durham and C. Djerassi.

626.     Optical Rotatory Dispersion Studies CXI. The Octant Rule and Equatorial Alkoxycarbonyl and Carboxyl Groups. Synthesis of Optically Active Adamantanones.

Tetrahedron Letters, 1097 (1968)
By W. S. Briggs, M. Suchy And C. Djerassi.

627.     Mass Spectrometry in Structural and Stereochemical Problems. CXXXIX. The Fragmentation of Some Cyanohydrins and O-Acylcyanohydrins Upon Electron Impact.

Arkiv Kemi, 28, 435 (1968)
By G. Schroll, S.-O. Lawesson, A. M. Duffield and C. Djerassi.

628.     Mass Spectrometry in Structural and Stereochemical Problems. CLIII. Electron Impact Promoted Frag­mentation of N-Alkyl Cyanides.

Org. Mass Spectr., 1, 3 (1968)
By W. Carpenter, Y. M. Sheikh, A. M. Duffield and C. Djerassi.

629.     Mass Spectrometry in Structural and Stereochemical Problems. CL. Fragmentation and Synthesis of Bicyclic and Monocyclic Models of 20-Keto Steroids.

Chem. Ber., 101, 1018 (1968)
By B. Zeeh, G. Jones and C. Djerassi.

630.     Some Applications of Magnetic Circular Dichroism and Optical Rotatory Dispersion.

Nature, 217, 918 (1968)
By B. Briat and C. Djerassi.

 

631.     Mass Spectrometry in Structural and Stereochemical Problems. CXXIII. Mass Spectrometry of Depsides, Depsidones, Dibenzofurans, and Diphenylbutadienes with Positive and Negative Ions.

Tetrahedron, 24, 2707 (1968)
By S. Huneck, C. Djerassi, D. Becher, M. Barber, Von Ardenne, K. Steinfelder and R. Tümmler.

632.     Mass Spectrometry in Structural and Stereochemical Problems. CXLII. Electron Impact Induced Analogies to Thermal Elimination Processes in S-Methyl Xan­thates and Esters.

J. Org. Chem., 33, 1612 (1968)
By W. Scott Briggs and C. Djerassi.

633.     The Pyrolysis of the Epimeric d0- and 2-d1-2- Methylcyclohexyl-S-Methyl Xanthates and Acetates.

J. Org. Chem., 33, 1625 (1968)
By W. Scott Briggs and C. Djerassi.

634.     Mass Spectrometry in Structural and Stereochemical Problems. CLIX. The Question of Ring Expansion in the Electron Impact-induced Fragmentation of Aromatic Amines.

Chem. Comm., 414 (1968)
By A. V. Robertson, M. Marx and C. Djerassi.

635.     Mass Spectrometry in Structural and Stereochemical Problems. CLII. Electron Impact Promoted Frag­mentation of Some Substituted Germacyclopentanes and Germacyclopentenes.

J. Organometallic Chem., 12, 123 (1968)
By A. M. Duffield, C. Djerassi, P. Mazerolles, J. Dubac and G. Manuel.

636.     Alkaloid Studies. LIX. The Structure and Absolute Configuration of Vallesamidine.

J. Am. Chem. Soc., 90, 2445 (1968)
By S. H. Brown, C. Djerassi and P. G. Simpson.

637.     Mass Spectrometry in Structural and Stereochemical Problems. CXLVIII. Electron Impact Induced Fragmentations of Cyclic Sulfites and Carbonates.

Tetrahedron, 24, 2949 (1968)
By P. Brown and C. Djerassi.

638.     Selective Ketalization of Steroid Ketones with Tris-triphenylphosphin-rhodium Chloride.

Chem. Ber., 101, 1154 (1968)
By W. Voelter and C. Djerassi.

639.     Terpenoids LXII. Eunicellin, a Diterpenoid of the Gorgonian Eunicella Stricta. X-Ray Diffraction Analysis of Eunicellin Dibromide.

Tetrahedron Letters, 2879 (1968)
By O. Kennard, D. G. Watson, L. Riva di Sanseverino, B. Tursch, R. Bosmans and C. Djerassi.

640.     Mass Spectrometry in Structural and Stereochemical Problems. CLIV. Electron Impact Promoted Frag­mentation of Alkyl Tetrahydropyranyl Ethers and Thioethers.

J. Org. Chem., 33, 2266 (1968)
By S. J. Isser, A. M. Duffield and C. Djerassi.

641.     Mass Spectrometry in Structural and Stereochemical Problems. CLV. The Electron Impact Induced Frag­mentations and Rearrangements of Some Trimethyl­silyl Ethers of Aliphatic Glycols and Related Compounds.

J. Org. Chem., 33, 2271 (1968)
By J. Diekman, J. B. Thomson and C. Djerassi.

642.     Mass Spectrometry in Structural and Stereochemical Problems. CLXIII. Rearrangement Reactions in Organic Mass Spectrometry.

Advances in Mass Spectrometry, C. E. Kendrick, ed. The Institute of Petroleum, London, 1968, Vol. 4, pp. 199-210
By C. Djerassi.

643.     Mass Spectrometry in Structural and Stereochemical Problems. CLVIII. Electron Impact Promoted Fragmentation of Triphenylmethyl Ethers.

Org. Mass Spectr., 1, 251 (1968)
By Y. M. Sheikh, A. M. Duffield and C. Djerassi.

644.     Mass Spectrometry in Structural and Stereochemical Problems. CLX. On the Supposed Peri Interaction in 4-Isobutylquinoline.

J. Org. Chem., 33, 2962 (1968)
By T. Muraski and C. Djerassi.

645.     Magnetic Circular Dichroism Studies V. Investigation of Some Cyclopentaene Derivatives.

J. Am. Chem. Soc., 90, 4691 (1968)
By B. Briat, D. A. Schooley, R. Records, E. Bunnenberg, C. Djerassi and E. Vogel.

646.     Mass Spectrometry in Structural and Stereochemical Problems. CLXI. Elucidation of the Course of the Characteristic Ring D Fragmentation of Steroids.

J. Am. Chem. Soc., 90, 5465 (1968)
By L. Tökés, G. Jones and C. Djerassi.

647.     Magnetic Circular Dichroism Studies VI. Investigation of Some Purines, Pyrimidines and Nucleosides.

J. Am. Chem. Soc., 90, 6163 (1968)
By W. Voelter, R. Records, E. Bunnenberg and C. Djerassi.

648.     Mass Spectrometry in Structural and Stereochemical Problems. CLVI. 1,4-Dihydropyridines Preparation and Spectroscopic Properties.

Arkiv Kemi, 29, 525 (1968)
By G. Schroll, S. P. Nygaard, S.-O. Lawesson, A. M. Duffield and C. Djerassi.

649.     Mass Spectrometry in Structural and Stereochemical Problems. CLXIV. Electron Impact Promoted Frag­mentation of Some Thiosemicarbazones.

Org. Mass Spectr., 1, 633 (1968)
By M. Younus Sheikh, A. M. Duffield and C. Djerassi.

650.     Alkaloid Studies LX. The Structures of Two Novel Aspidosperma Alkaloids, Deoxyaspidodispermine and Aspidodispermine.

Tetrahedron Letters, 5837 (1968)
By M. Ikeda and C. Djerassi.

651.     Mass Spectrometry in Structural and Stereochemical Problems. CLXV. A Study of Skeletal Rearrangements in     13C-Labeled Aromatic Amines.

J. Am. Chem. Soc., 90, 6992 (1968)
By A. V. Robertson and C. Djerassi.

652.     Mass Spectrometry in Structural and Stereochemical Problems. CLXVII. Long Range Hydrogen Transfers in Mass Spectrometry.

Helv. Chim. Acta, 51, 1750 (1968)
By R. Brandt and C. Djerassi.

653.     Mass Spectrometry in Structural and Stereochemical Problems. CLVII. A Study of the Fragmentation Processes of Some N-Acyl-2-Indolinols Upon Electron Impact.

Acta. Chem. Scand., 22, 2329 (1968)
By O. Buchardt, A. M. Duffieldand C. Djerassi.

654.     Optical Rotatory Dispersion Studies CXII. An Octant Rule for the Thiocyanate Chromophore and its Application to Rotameric Equilibrium Studies in the Steroid Series.

Tetrahedron, 24, 6913 (1968)
By C. Djerassi, D. A. Lightner, D. A. Schooley, K. Takeda, T. Komeno and K. Kuriyama.

655.     Optical Rotatory Dispersion Studies CXIII. Molybdate-­Pyranose Complexes.

Ann., 718, 238 (1968)
By W. Voelter, E. Beyer, R. Records, E. Bunnenberg and C. Djerassi.

656.     Mass Spectrometry in Structural and Stereochemical Problems. CLXVI. The Electron Impact Promoted Fragmentation of Some Aliphatic 1,2-Glycols.

Org. Mass Spectr., 1, 777 (1968)
By J. Kossanyi, J. P. Morizur, B. Furth, J. Wiemann, A. M. Duffield and C. Djerassi.

657.     Alkaloid Studies LXI. The Structure of Twelve New Alkaloids from Aspidosperma Cylindrocarpon.

Journal Chem. Soc. (C), 417 (1969)
By B. V. Milborrow and C. Djerassi.

658.     Magnetic Circular Dichroism Studies VII, Some Derivatives of Vitamin B12.

Bull. Soc. Chim. France, 135 (1969)
By B. Briat and C. Djerassi.

659.     Optical Rotatory Dispersion Studies CXIV. Molybdate-­Polyalkohol-Complexes.

Chem. Ber., 102, 1005 (1969)
By W. Voelter, E. Bayer, R. Records, E. Bunnenberg and C. Djerassi.

660.     Mass Spectrometry in Structural and Stereochemical Problems CLXVIII. Effect of Fluorine Substitution on the McLafferty Rearrangement of Aliphatic Ketones.

Org. Mass Spectr., 2, 317 (1969)
By W. Carpenter, A. M. Duffield and C. Djerassi.

661.     Mass Spectrometry in Structural and Stereochemical Problems CLXIX. Determination of the Structures of the Ions in the Single and Double McLafferty Rearrangements by Ion Cyclotron Resonance Spectroscopy.

J. Am, Chem. Soc., 91, 2069 (1969)
By J. Diekman, J. K. MacLeod, C. Djerassi and J. D. Baldeschwieler.

662.     Optical Rotatory Dispersion Studies CXVI, The Circular Dichroism of Some Lactic Acid Derivatives. A Reinterpretation.

Chem. Comm., 355 (1969)
By G. Barth, W. Voelter, E. Bunnenberg and C. Djerassi.

663.     Mass Spectrometry in Structural and Stereochemical Problems CLXX. A Study of the Effect of Ring Size in Reciprocal Hydrogen Transfer.

J. Am. Chem. Soc., 91, 2724 (1969)
By G. Eadon and C. Djerassi.

664.     Applications of Artificial Intelligence for Chemical Inference I. The Number of Possible Organic Compounds. Acyclic Structures Containing C, H, O and N.

J. Am. Chem. Soc., 91, 2973 (1969)
By J. Lederberg, G. L. Sutherland, B. G. Buchanan, E. A. Feigenbaum, A. V. Robertson, A. M. Duffield, and C. Djerassi.

665.     Applications of Artificial Intelligence for Chemical Inference II.  Interpretation of Low Resolution Mass Spectra of Ketones.

J. Am. Chem. Soc., 91, 2977 (1969)
By A. M. Duffield, A. V. Robertson, C. Djerassi, B. G. Buchanan, G. L. Sutherland, E. A. Feigenbaum and J. Lederberg.

666.     Mass Spectrometry in Structural and Stereochemical Problems CLXII. A Study of the Fragmentation Processes of Some Benzoxazepines upon Electron Impact.

Acta. Chem. Scand., 23, 126 (1969)
By O. Buchardt, A. M. Duffield and C. Djerassi.

667.     Optical Rotatory Dispersion Studies CXV. α-Hydroxy Acid—Molybdate Complexes.

Chem. Ber., 102, 2003 (1969)
By W. Voelter, E. Beyer, G. Barth, E. Bunnenberg and C. Djerassi.

 

668.     Mass Spectrometry in Structural and Stereochemical Problems CLXXI. Factors Governing the Loss of Small vs. Large Radicals in the α-Fission of Aliphatic Amines.

Org. Mass Spectr., 2, 625 (1969)
By C. A. Brown, A. M. Duffield and C. Djerassi.

669.     Mass Spectrometry in Structural and Stereochemical Problems CLXXII. The Electron Impact Promoted Fragmentation of 1,2-Cyclohexanedioi.

Org. Mass Spectr., 2, 631 (1969)
By M. K. Strong and C. Djerassi.

670.     Mass Spectrometry in Structural and Stereochemical Problems CLXXIV. Electron Impact Induced Fragmenta­tion of Some Aryl- and Alkylsulfonylthioureas.

Org. Mass Spectr., 2, 641 (1969)
By A. M. Duffield, C. Djerassi, R. Neidlein, and E. Heukelbach.

671.     Mass Spectrometry in Structural and Stereochemical Problems CLXXVII. Application of Ion Cyclotron Resonance to the Structure Elucidation of the C3H6O Ion Formed in the Double McLafferty Rearrangement.

J. Am. Chem. Soc., 91, 3986 (1969)
By G. Eadon, J. Diekman and C. Djerassi.

672.     Terpenoids LXIV. Chemical Studies of Marine Inverte­brates V. The Isolation of Three New Holothurinogenins and Their Chemical Correlation with Lanosterol.

J, Am. Chem. Soc., 91, 4918 (1969)
By P. Roller, C. Djerassi, R. Cloetens and B. Tursch,

673.     Mass Spectrometry in Structural and Stereochemical Problems CLXXVI. The Course of the Electron Impact Induced Fragmentation of Androstane.

J. Am. Chem. Soc., 91, 5017 (1969)
By L. Tökés and C. Djerassi.

674.     Terpenoids LXIII. The Structure of Jegosapogenol and the Configuration at C-21 and C-22 in Barringtogenol D, Aescigenin, Protoaescigenin and Isoaescigenin.

J. Org. Chem., 34, 3135 (1969)
By T. Nakano, M. Hasegawa, T. Fukumaru, L. J. Durham, H. Budzikiewicz and C. Djerassi.

675.     Mass Spectrometry in Structural and Stereochemical Problems CLXXIII. The Electron Impact induced Frag­mentations and Rearrangements of Trimethylsilyl Esters of ω-Phenoxyalkanoic Acids.

J. Org. Chem., 34, 3147 (1969)
By J. Diekman, J. B. Thomson and C. Dierassi.

676.     Prognosis for the Development of New Chemical Birth Control Agents.

Science, 166, 468 (1969)
By Carl Djerassi.

677.     Magnetic Circular Dichroism Studies VIII. Investigation of Some Purine Cyclonucleosides.

J. Am. Chem. Soc., 91, 6165 (1969)
By W, Voelter, G. Barth, R. Records, E. Bunnenberg and C. Djerassi.

678.     Magnetic Circular Dichroism Studies IX.  The Magnetic Circular Dichroism of Carbonyl Compounds.

Chem. Comm., 1246 (1969)
By G. Barth, E. Bunnenberg and C. Djerassi.

679.     Mass Spectrometry in Structural and Stereochemical Problems CLXXIX. The Electron Impact Induced Rearrangement of 1-Phenylheptenes. Further Evidence for Double Bond Lability.

J. Am. Chem. Soc., 91, 6808 (1969)
By A. F. Gerrard and C. Djerassi.

680.     Mass Spectrometry in Structural and Stereochemical Problems CLXXXIII. A Study of the Electron Impact Induced Fragmentation of Aliphatic Aldehydes.

J. Am. Chem. Soc., 91, 6814 (1969)
By R. J. Liedtke and C. Djerassi.

681.     Mass Spectrometry in Structural and Stereochemical Problems CLXXXVI. Electron Impact Promoted Eight-Membered Hydrogen Transfer in Vinyl Ethers.

Chem. Comm., 1385 (1969)
By M. Katoh and C. Djerassi.

682.     Mass Spectrometry in Structural and Stereochemical Problems CLXXX. Oxygen Rearrangement and Fragmentation Reactions After Electron Impact on 4-Hydroxy- and 4-Alkoxy-1-Decalones.

J. Org. Chem., 34, 4091 (1969)
By R. T. Gray, M. Ikeda and C. Djerassi.

683.     Applications of Artificial Intelligence for Chemical Inference III. Aliphatic Ethers Diagnosed by Their Low Resolution Mass Spectra and NMR Data.

J. Am. Chem. Soc., 91, 7440 (1969)
By G. Schroll, A. M. Duffield, C. Djerassi, B. G. Buchanan, G. L. Sutherland, E. A. Feigenbaum and J. Lederberg.

684.     Mass Spectrometry in Structural and Stereochemical Problems CLXXVIII. The Electron Impact Promoted Fragmentation of 1,2-Cyclohexane Oxide.

Org. Mass Spectr., 2, 1201 (1969)
By M. K. Strong, P. Brown and C. Djerassi.

685.     Mass Spectrometry in Structural and Stereochemical Problems CLXXV. The Mass Spectra of α-Hydroxy Ketones. Evidence Against Electron Impact Induced Alkyl Shifts in Ketols.

Journal Chem. Soc.(C), 2550 (1969)
By C. A. Brown and C. Djerassi.

 

686.     Alkaloid Studies LXII. X-ray Crystallographic Structure Determination of Dichotine Hydrobromide.

J. Am. Chem. Soc., 92, 222 (1970)
By N. C. Ling, C. Djerassi and P. G. Simpson

687.     Mass Spectrometry in Structural and Stereochemical Problems CXC. Electron Impact Induced Triple Hydrogen Migration in Vinyl Alkyl Ethers.

J. Am. Chem. Soc., 92, 731 (1970)
By M. Katoh and C. Djerassi.

688.     Optical Rotatory Dispersion Studies CXVII. Absolute Configurational Assignments of Some α-Substituted Phenyl‑acetic Acids by Circular Dichroism Measurements.

J. Am. Chem. Soc., 92, 875 (1970)
By G. Barth, W. Voelter, H. S. Mosher, E. Bunnenberg and C. Djerassi.

689.     Terpenoids LXV. Chemical Studies of Marine Invertebrates. Praslinogenin, a New Holothurinogenin from the Indian Ocean Sea Cucumber, Bohadschia koellikeri.

Tetrahedron Letters 467 (1970)
By B. Tursch, R. Cloetens and C. Djerassi.

690.     Mass Spectrometry in Structural and Stereochemical Problems CLXXXII. Investigations in the 10-Phenyl-2-Decalone System. The Synthesis and Electron-Impact Promoted Phenyl Migration of trans-10-Phenyl-2-Octalone.

J. Org. Chem., 35, 753 (1970)
By R. T. Gray and C. Djerassi.

691.     Magnetic Circular Dichroism Studies XI. Investigation of Some Adenosine Cyclonucleosides.

Tetrahedron Letters, 727 (1970)
By D. L. Elder, E. Bunnenberg, C. Djerassi, M. Ikehara and W. Voelter.

692.     Demonstration of a Biogenetically Unprecedented Side Chain in the Marine Sterol, Gorgosterol.

J. Am. Chem. Soc., 92, 2179 (1970)
By R. L. Hale, J. Leclercq, B. Tursch, C. Djerassi R. A. Gross, Jr., A. J. Weinheimer, K. Gupta, and Paul J. Scheuer.

693.     Mass Spectrometry in Structural and Stereochemical Problems CLXXXIV. Charge Localization in Fragment Ions of Amino Ketones and Esters.

Org. Mass Spectr., 3, 439 (1970)
By J. Cable, G. W. Adelstein, J. Gore and C. Djerassi.

694.     Mass Spectrometry in Structural and Stereochemical Problems CLXXXV. Effect of the Phenyl Group in the Moss Spectra of Trans-10-Phenyl-2-Decalone and Trans-­10-Phenyldecalin.

Org. Mass Spectr., 3, 245 (1970)
By R. T. Gray and C. Djerassi.

 

695.     Mass Spectrometry in Structural and Stereochemical Problems CLXXXI. Further Studies of Remote Group Interactions After Electron Impact in 4-Substituted Cyclohexanones.

J. Org. Chem.,      35, 1525 (1970)
By R. T. Gray, R. J. Spangler, and C. Djerassi.

696.     Mass Spectrometry in Structural and Stereochemical Problems CLXXXVIII. The Electron Impact Induced Behavior of Branched Ketones and Esters, with Special Emphasis on Hydrogen Rearrangements.

J. Am. Chem. Soc., 92, 3084 (1970)
By G. Eadon and C. Dierassi.

697.     Mass Spectrometry in Structural and Stereochemical Problems CXCII. Skeletal Rearrangement in the Fragmentation of Phenyl Azide.

Tetrahedron Letters 1875 (1970)
By P. D. Woodgate and C. Djerassi.

698.     Mass Spectrometry in Structural and Stereochemical Problems CLXXXVII. A Study of Skeletal Rearrangements in Chromans by Combined 13C and Deuterium Labeling.

Org. Mass Spectr., 3, 753 (1970)
By J. R. Trudell, S. D. Sample and C. Djerassi.

699.     Terpenoids LXVI. Simultaneous Functionalization of the C-18 and C-19 Angular Methyl Groups in 11β-­Hydroxylanostan-3β-yl Acetate by Lead Tetraacetate-­Iodine Oxidation.

J. Chem. Soc.(C) 1089 (1970)
By P. Roller and C. Dierassi

700.     Contraception 1984: Putting Something in the Water Supply.

Family Planning Perspectives, 2, No. 3, 29 (1970)
By C. Djerassi.

701.     Magnetic Circular Dichroism Studies X.  Investigation of some Carbonyl Compounds.

Symp. Faraday Soc., No. 3, 49 (1969)
By G. Barth, E. Bunnenberg, C. Djerassi, D. Elder and R. Records.

702.     Side Chain Transformations and Deuterium Labeling in the Steroidal Sapogenin Series.

J. Org. Chem., 35, 2571 (1970)
By W. H. Faul, A. Failli and C. Djerassi.

703.     Terpenoids LXVII. Chemical Studies of Marine Inverte­brates VII. Interrelation of Seychellogenin and Lanosterol through Lanostane-3β,11β ,18-triol.

J. Org. Chem., 35, 2585 (1970)
By P. Roller, B. Tursch and C. Djerassi.

 

 

 

704.     Alkaloid Studies LXIV. The Crystal Structure and Absolute Configuration of (-) 17-O-Methyl-Aspidodispermine Nb-Hydrobromide.

Tetrahedron Letters, 3015 (1970)
By N. C. Ling and C. Djerassi.

705.     Mass Spectrometry in Structural and Stereochemical Problems CXCI. Applications of Mass Spectrometry in the Steroid Field.

Pure and Appl. Chem., 21, 205 (1970)
By C. Djerassi.

706.     Birth Control after 1984

Science, 169, 941 (1970)
By C. Djerassi.

707.     The Structure and Absolute Configuration of the Marine Sterol, Gorgosterol.

J. Am. Chem. Soc., 92, 5281 (1970)
By N. C. Ling, R. L. Hale and C. Djerassi

708.     Mass Spectrometry in Structural and Stereochemical Problems CLXXXIX. Electron Impact Induced Fragmenta­tions and Rearrangements of Alkoxycyclohexanol Tri­methylsilyl Ethers and Alkoxycyclohexyl Trimethylsilanes.

Org. Mass Spectr., 3, 973 (1970)
By R. T. Gray, J. Diekman, G. L. Larson, W. K. Musker and C. Djerassi.

709.     Mass Spectrometry in Structural and Stereochemical Problems CXCIII. On the Combined Hydroxyl and Water Loss in Nitrophenylhydrazones.

Org. Mass Spectr., 3, 1089 (1970)
By R. J. Liedtke, A. M. Duffield and C. Djerassi.

710.     Mass Spectrometry in Structural and Stereochemical Problems CXCV. The Structure of the [C6H6O]+ Ion in the Spectrum of Phenyl Alkyl Ethers.

Org. Mass Spectr., 3, 1093 (1970)
By P. D. Woodgate and C. Djerassi.

711.     Mass Spectrometry in Structural and Stereochemical Problems CXCIV. Mass Spectrometric Fragmentation of Steroidal Sapogenins.

Org. Mass Spectr., 3, 1187 (1970)
By W. H. Faul and C. Djerassi.

712.     Alkaloid Studies LXIII. The Constitution and Chemistry of Dichotine and 11-Methoxydichotine.

J. Am. Chem. Soc., 92, 6019 (1970)
By N. C. Ling and C. Djerassi.

713.     Applications of Artificial Intelligence for Chemical Inference VI. Approach to a General Method of Interpreting Low Resolution Mass Spectra with a Computer.

Helv. Chim. Acta, 53, 1394 (1970)
By A. Buchs, A. B. Delfino, A. M. Duffield, C. Djerassi, B. G. Buchanan, E. A. Feigenbaum and J. Lederberg.

714.     Mass Spectrometry in Structural and Stereochemical Problems CXCV. Application of Ion Cyclotron Resonance to the Structure Elucidation of the C3H6O Ion Formed in the Double McLafferty Rearrangement.

J. Am. Chem. Soc., 92, 6205 (1970)
By G. Eadon, J. Diekman and C. Djerassi.

715.     Optical Rotatory Dispersion Studies CXVIII.  Aliphatic C-­Nitroso Compounds.

J. Org. Chem., 35, 3591 (1970)
By N. D. Vietmeyer and C. Djerassi.

716.     Applications of Artificial Intelligence for Chemical Inference IV. Saturated Amines Diagnosed by their Low Resolution Mass Spectra and Nuclear Magnetic Resonance Spectra.

J. Am. Chem. Soc., 92, 6831 (1970)
By A. Buchs, A. M. Duffield, C. Djerassi, G. Schroll, A. B. Delfino, B. G. Buchanan, G. L. Sutherland, E. A. Feigenbaum and J. Lederberg.

717.     Mass Spectrometry in Structural and Stereochemical Problems- CXCVII. Electron-Impact Induced Functional Group Interaction in 4-Benzyloxycyclohexyl Trimethylsily1 Ether.

Organic Mass Spectrometry 4, 257 (1970)
By Paul D. Woodgate, Robin T. Gray and Carl Djerassi

718.     Mass Spectrometry in Structural and Stereochemical Problems - CXCVIII. A study of the Fragmentation Processes of Some α,β-Unsaturated Aliphatic Ketones.

Organic Mass Spectrometry, 4, 273 (1970)
By Younus M. Sheikh, A. M. Duffield and Carl Djerassi

719.     Applications of Artificial Intelligence for Chemical Inference V. An Approach to the Computer Generation of Cyclic Structures. Differentiation between All The Possible Isomeric Ketones of Composition C6H10O.

Organic Mass Spectrometry, 4, 493(1970)
By Younus M. Sheikh, Armand Buchs, Allan B. Delfino Gustav Schroll, A. M. Duffield, Carl Djerassi, B. G. Buchanan, G. L. Sutherland, E. A. Feigenbaum and J. Lederberg.

720.     Physical Methods in Steroid Chemistry.

Intra Science Chemistry Reports, 4, 165 (1970)
By Carl Djerassi.

721.     Mass Spectrometry in Structural and Stereochemical Problems CC. A Study of the Fragmentation Processes of some Pyrilium Salts.

Organic Mass Spectr., 5, 87 (1971)
By A. M. Duffield, C. Djerassi and A. T. Balaban.

722.     Acansterol: A Cyclopropane-containing Marine Sterol from Acanthaster planci.

Chem. Comm., 217 (1971)
By Y. M. Sheikh, C. Djerassi and B. W. Tursch.

723.     Research Centers of Excellence in Developing Countries.

Proceedings, 20th Pugwash Conference on Science and World Affairs, pp. 159-162 (1970)
By Carl Djerassi.

724.     A Possible Catalytic Role for Pugwash in Defining New Contraceptive Methods for Developing Countries.

Proceedings, 20th Pugwash Conference on Science and World Affairs, pp. 163-164 (1970).

725a    "Prognosis for the Development of New Birth Control Agents" (see No. 676) by Carl Djerassi.

Reprinted in "Global Ecology" (ed. by J. P. Holdren and P. R. Ehrlich), Harcourt Grace, New York, 1971.

725b.   "Birth Control after 1984" (see No. 706) by Carl Djerassi.

Reprinted in: Ob. Gyn. News, April 1, 1971;
Zero Population Growth National Reporter, Vol. 3, Nos. 3 (March) and 6 (June), 1971;
"Environmental Protection" (by L. L. Jaffe and L. H. Tribe), Bracton Press, Chicago, 1971, pp. 589-593.

726.     Magnetic Circular Dichroism Studies XII. The Determina­tion of Tryptophan in Proteins.

J. Amer. Chem. Soc., 93, 2545 (1971)
By G. Barth, R. Records, E. Bunnenberg, C. Djerassi and W. Voelter.

727.     Mass Spectrometry in Structural and Stereochemical Problems CCV. The Mass Spectra of Trimethylsilyl Ethers of Phenols and the Importance of Neighboring Group Participation in Fragmentation.

Org. Mass Spectr., 5, 487 (1971)
By G. G. Smith and C. Djerassi.

728.     Mass Spectrometry in Structural and Stereochemical Problems CXCIX. Contrasting Fragmentations of Singly-and Doubly-Charged o-, m- and p-Hydroxyalkylphenones and their Trimethylsilyl Ethers.

Org. Mass Spectr., 5, 505 (1971)
By G. G. Smith and C. Djerassi.

729.     Mass Spectrometry in Structural and Stereochemical Problems CCIV. Spectra of Hydantoins II. Electron Impact Induced Fragmentation of Some Substituted Hydantoins.

Org. Mass Spectr., 5, 551 (1971)
Reneé A. Corral, Orfeo O. Orazi, A. M. Duffield and C. Djerassi.

730.     Magnetic Circular Dichroism Studies XV. Organic Chemical Applications of Magnetic Circular Dichroism.

Pure and Appl. Chem., 25, 57 (1971)
By C. Djerassi, E. Bunnenberg and D. Elder.

 

731.     Mass Spectrometry in Structural and Stereochemical Problems CCII. Interaction of Remote Functional Groups in Acyclic Systems upon Electron Impact.

J. Org. Chem., 36, 1796 (1971)
By M. Sheehan, R. J. Spangler, M. Ikeda and C. Djerassi.

732.     Alkaloid Studies LXV. Confirmation of the Heptacyclic Structure of the Aspidosperma Obscurinervium Alkaloids Through X-Ray Analysis of Obscurinervine Hydrobromide.

Tetrahedron Letters, 27, 2527 (1971)
By J. Kahrl, T. Gebreyesus and C. Djerassi.

733.     Mass Spectrometry in Structural and Stereochemical Problems CCVI. Observation of the Fragmentation of Olefinic Hydrocarbons.

Org. Mass Spectr., 5, 817 (1971)
By K. K. Mayer and C. Djerassi.

734.     Mass Spectrometry in Structural and Stereochemical Problems CCIII. The Course of a Triple Hydrogen Migra­tion in Esters of Trimellitic Anhydride.

J. Amer. Chem. Soc., 93, 3905 (1971)
By J. Cable and C. Djerassi.

735.     Mass Spectrometry in Structural and Stereochemical Problems CCVII. Fragmentation of Unsaturated Ethers.

Org. Mass Spectr., 5, 895 (1971)
By J. P. Morizur and C. Djerassi.

736.     Mass Spectrometry in Structural and Stereochemical Problems CCI. The Fragmentation of Aliphatic Ketones in the Mass Spectrometer: A Detailed Study of Nonan-4-one using Ion Kinetic Energy Spectroscopy.

Org. Mass Spectr., 5, 917 (1971)
By G. Eadon, C. Djerassi, J. H. Beynon and R. M. Caprioli

737.     Magnetic Circular Dichroism Studies XIII. A Study on Purified Bovine Erythrocuprein.

Biochim. Biophs. Acta, 243, 203 (1971)
By U. Weser, E. Bunnenberg, R. Cammack, C. Djerassi, L. Flohe, G. Thomas and W. Voelter.

738.     Mass Spectrometry in Structural and Stereochemical Problems CCIX. Functional Group Interaction after Electron Impact. Anomalous Ether Cleavage in Bi­functional Benzyloxy Ethers.

J. Org. Chem., 36, 3526 (1971)
By M. Sheehan, R. J. Spangler and C. Djerassi.

739.     Magnetic Circular Dichroism Studies XIV. Investigation of Xanthine Oxidase.

Eur. J. Biochem., 22, 580 (1971)
By E. Bayer, A. Bacher, P. Krauss, W. Voelter, G. Barth, E. Bunnenberg and C. Djerassi.

 

740.     Reversible Fertility Control.

XXIIIrd International Congress of Pure and Applied Chemistry, Vol. III, pp. 55-80 (1971)
By Carl Djerassi.

741.     The Application of Artificial Intelligence in the Interpretation of Low-Resolution Mass Spectra.

Advances in Mass Spectrometry, Vol. 5, 314 (1971)
By A. Buchs, A. B. Delfino, C. Djerassi, A. M. Duffield, B. G. Buchanan, E. A. Feigenbaum, J. Lederberg, G. Schroll and G. L. Sutherland.

742.     Fertility Control Through Abortion - An Assessment of the Period 1950 - 1980.

Bulletin of the Atomic Scientists, 28, (No. 1), 9 (1972)
By Carl Djerassi.

743.     Synthesis and Biological Activity of D-Bishomo Steroid: Journal of Medicinal Chemistry, 15, 89 (1972)
By G. Eadon and C. Djerassi.

744.     Mass Spectrometry in Structural and Stereochemical Problems CCVIII. The Effect of Double Bonds Upon the McLafferty Rearrangement of Carbonyl Compounds.

J. Amer. Chem. Soc., 94, 473 (1972)
By J. R. Dias, Y. M. Sheikh and C. Djerassi.

745.     Mass Spectrometry in Structural and Stereochemical Problems CCX. Evidence for Transition States of Different Ring Sizes in the Loss of C4H8 from Phenyl n-Butyl Ether in the Mass Spectrometer.

J. Amer. Chem. Soc., 94, 482 (1972)
By A. Yeo and C. Djerassi.

746.     Mass Spectrometry in Structural and Stereochemical Problems CCXIII. The Effect of Ring Size Upon the Electron Impact Induced Behavior of Steroidal Ketones.

J. Org. Chem., 37, 155 (1972)
By S. Popov, G. Eadon and C. Djerassi.

747.     Mass Spectrometry in Structural and Stereochemical Problems CCXI. The Effect of Structural Variations on the Electron Impact Induced Fragmentation of Steroid Hydrocarbons.

J. Amer. Chem. Soc., 94, 1282 (1972)
By G. Eadon, S. Popov and C. Djerassi.

748.     Magnetic Circular Dichroism Studies XVII. Magnetic Circular Dichroism Spectra of Proteins. A New Method for the Ouantitative Determination of Tryptophan.

J. Amer. Chem. Soc., 94, 1293 (1972)

By G. Barth, R. Records, E. Bunnenberg, C. Djerassi and W. Voelter.

 

749.     Mass Spectrometry in Structural and Stereochemical Problems CCXV. Behavior of Phenyl-Substituted α,β- Unsaturated Ketones Upon Electron Impact. Promotion of Hydrogen Rearrangement Processes.

J. Org. Chem., 37, 776 (1972)
By R. J. Liedtke, A. F. Gerrard, J. Diekman and C. Djerassi.

750.     Pugwash Population Problems of Centers of Excellence.

Proceed. of 21 Pugwash Conference on Science and World Affairs (Sinaia, Romania 1971), pp. 183-188
By C. Djerassi.

751.     Magnetic Circular Dichroism Studies XVI. Investigations of Some Conjugated Olefins.

J. Org. Chem., 37, 1209 (1972)
By W. G. Dauben, J. I. Seeman, P. H. Wendschuh, G. Barth, E. Bunnenberg and C. Djerassi.

752.     Mass Spectrometry in Structural and Stereochemical Problems CCXVI. Anomalous Cleavage Ions in Bifunctional Compounds Resulting from Participative Interaction.

Org. Mass Spectre., 6, 384 (1972)
By J. R. Dias and C. Djerassi.

753.     5α-Pregn-9(11)-Ene-3β, 6α -Dio1-20-One and 5α-­Cholesta-9(11), 20(22)-Diene-3β, 6α-Diol-23-One‑ Two Novel Steroids from the Starfish Acanthaster Planci

J. Amer. Chem. Soc., 94, 3278 (1972)
By Y. M. Sheikh, B. Tursch and C. Djerassi.

754.     Alkaloid Studies LXVI. Reactions of Some Aspidosperma Alkaloids with Metachloroperbenzoic Acid. Removal of the Angular Ethyl Group of Aspidospermine.

J. Chem. Soc. (Perkin), 849 (1972)
By T. Gebreyesus and C. Djerassi.

755.     Mass Spectrometry in Structural and Stereochemical Problems CCXII. Induced Triple Hydrogen Rearrangements and Other Fragmentations of Alkyl Vinyl Ethers and Thioethers.

J. Amer. Chem. Soc., 94, 3107 (1972)
By M. Katoh, D. A. Jaeger and C. Djerassi.

756.     Mass Spectrometry in Structural and Stereochemical Problems CCXIV. Induced Fragmentation of Simple Acetylenes.

J. Amer. Chem. Soc., 94, 3115 (1972)
By P. D. Woodgate, K. K. Mayer and C. Djerassi.

757.     Mass Spectrometry in Structural and Stereochemical Problems CCXVIII. The Electron Impact Induced Behavior of Terpenoid Esters of the Juvenile Hormone Class.

J. Org. Chem., 37, 2111 (1972)
By R. J. Liedtke and C. Djerassi.

758.     A. New Sterol from an Alcyonarian.

Steroids, 20, 121 (1972)
By J. P. Engelbrecht, B. Tursch and C. Djerassi.

759.     Birth Control after 1984: A Realistic Appraisal of Future Contraceptive Developments (modified version of No. 706).

Chapter 5 in "Are Our Descendants Doomed?"
H. Brown and E. Hutchings, ed., Viking Press, New York, 1972
By C. Djerassi.

759a. Birth Control after 1984 (see No. 706).

Reprinted in "Chemistry and Society" (Ed. by M. M. MacDonald and R. E. Davis), Willard Grant Press, Boston, 1972, pp. 212-242.
By C. Djerassi.

760.     Applications of Artificial Intelligence for Chemical Inference VIII. An Approach to the Computer Inter­pretation of the High Resolution Mass Spectra of Complex Molecules. Structure Elucidation of Estrogenic Steroids.

J. Amer. Chem. Soc., 94, 5962 (1972)
By D. H. Smith, B. G. Buchanan, R. S. Engelmore. A. M. Duffield, A. Yeo, E. A. Feigenbaum, J. Lederberg and C. Djerassi.

761.     Magnetic Circular Dichroism Studies XVIII.  Structure and the MCD of Saturated Ketones.

J. Amer. Chem. Soc., 94, 6464 (1972)
By L. Seamans, A. Moscowitz, G. Barth, E. Bunnenberg and C. Djerassi.

762.     Magnetic Circular Dichroism Studies XIX.  The Determination of the Tyrosine:Tryptophan Ratio in Proteins.

Anal. Biochem., 48, 471 (1972)
By G. Barth, E. Bunnenberg and C. Djerassi.

763.     Magnetic Circular Dichroism Studies XX. A Study on Purified Bovine APO-Erythrocuprein.

Biochem. Biophys. Acta, 278, 28 (1972)
By U. Weser, G. Barth, C. Djerassi, H. J. Hartmann, P. Krauss, G. Voelcker, W. Voelter and W. Voetsch.

764.     5α-Cholesta-9(11),17(20),24-Triene-3β,6α-Diol, A Minor Genin from the Starfish Acanthaster Planci.

Tetrahedron Letters, 3721 (1972)
By Y. M. Sheikh, B. Tursch and C. Djerassi.

765.     Magnetic Circular Dichroism Studies XXIII. Magnetic Circular Dichroism Spectra of Indole Alkaloids.

Hely. Chim. Acta, 55, 2168 (1972)
By G. Barth, R. E. Linder, E. Bunnenberg and C. Djerassi.

766.     Mass Spectrometry in Structural and Stereochemical Problems CCXVII. Electron Impact Promoted Frag­mentation of 0-Methyl Oximes of Some α,β-Un­saturated Ketones and Methyl Substituted Cyclo­hexanones.

Can. J. Chem., 50, 2776 (1972)
By Y. M. Sheikh, R. J. Liedtke, A. M. Duffield and C. Djerassi.

767.     Genetic Engineering - Probabilities and Practicalities.

Science and Public Affairs, Bulletin of Atomic Scientists XXVIII, No. 12, pp. 25-28 (1972)
By C. Djerassi.118

767a.   Genetic Engineering - Probabilities and Practicalities.

WPI Journal, 76, No. 1, 14 (1972)
By C. Djerassi.

768.     The Mechanism of the Reduction of α,β-Unsaturated (Steroid) Ketones with Diborane.

Tetrahedron Letters, 4673 (1972)
By I. Midgley and C. Djerassi.

769.     Mass Spectrometry in Structural and Stereochemical Problems CCXIX. Identification of a Unidirectional Quadruple Hydrogen Transfer Process in 7-Phenylhept­3-en-2-one 0-Methyl Oxime Ether.

Org. Mass Spectre., 6, 1271 (1972)
By R. J. Liedtke, Y. M. Sheikh, A. M. Duffield and C. Djerassi.

770.     Mass Spectrometry in Structural and Stereochemical Problems CCXX. Synthesis and Mass Spectra of 5α-­Cholest-8(9)- and 8(14)-en-7-ones.

J. Chem. Soc. (Perkin), 2771 (1972)
By I. Midgley and C. Djerassi.

771.     Mass Spectrometry in Structural and Stereochemical Problems CCXXI. The Loss of Methyl from the [M-C2H4]+. Ion of Butyrophenone.

Org. Mass Spectre., 6, 1285 (1972)
By K. B. Tomer and C. Djerassi.

 

772.     Planned Parenthood for Pets?

Science and Public Affairs           (Bulletin of Atomic Scientists) XXIX, No. 1,   pp. 10-19 (1973).
By C. Djerassi, A. Israel and W.   Jöchle.

773.     Terpenoids LXVIII. 23ξ-Acetoxv-17-Deoxy-7,8-Dihydroholothurinogenin, a New Triterpenoid Sapogenin from a Sea Cucumber.

J. Org. Chem., 38, 209 (1973).
By  I. Rothberg, B. M. Tursch and C. Djerassi.

774.     The Synthesis of Corticosteroids from Marine Sources.

J.   Amer.  Chem. Soc.,    95, 628 (1973).
By J. E. Gurst, Y. M. Sheikh and C. Djerassi.

775.     Stereochemical Course of the Reduction of 5α-Cholest-8(14)-en-7-one by Metal-Ammonia: A Ready Synthesis of    14β-Steroids.

J. Chem. Soc. (Perkin,I), 155 (1973)
By I. Midgley and C. Djerassi.

776.     Magnetic Circular Dichroism Studies XXII.    Magnetic Circular Dichroism Spectroscopy - A Definitive Method for the Determination of Urinary Porphyrins.

Anal. Biochem., 52, 83 (1973).
By  S. M. Kalman, G. Barth, R. E. Linder, E. Bunnenberg and C. Djerassi.

777.     Mass Spectrometry    in Structural and Stereochemical Problems CCXXII. Delineation of Competing Fragmentation Pathways of Complex Molecules from a Study of Meta-stable Ion Transitions of Deuterated Derivatives.

Org. Mass Spect, 7, 367 (1973).
By  D. H. Smith, A. M. Duffield and C. Djerassi.

778.     Mass Spectrometry    in Structural and Stereochemical Problems CCXXIII. Ortho Interactions of Nitro Groups.

Org. Mass Spect., 7, 383 (1973).
By K. B. Tomer, T. Gebreyesus and C. Djerassi.           

779.     Mass Spectrometry    in Structural and Stereochemical Problems CCXXVII. The Structure of the High Energy (M-Ketene)+. Ions from Acetanilide.

Tetrahedron Letters, 915 (1973).
By K. B. Tomer, S. Hammerum and C. Djerassi.

780.     Optical Rotatory Dispersion Studies CXIX.    The Effect of Ring Heteroatoms on the Cotton Effect of Cyclohexanones.

J.   Amer.  Chem. Soc.,    95, 3678 (1973).
By M. M. Cook and C. Djerassi.  

781.     The Carbon-13 Magnetic Resonance Spectra of Acyclic Aliphatic Amines.

J. Amer. Chem. Soc., 95, 3710 (1973).
By H. Eggert and C. Djerassi.

781a.   Contraception 1984: Putting Something in the Water Supply. (See No. 700).

Reprinted in "Population – A Class of Prophets" (E. Pohlman, ed.), New American Library, New York, 1973, pp. 300-302.
By C. Djerassi.     

782.     Mass Spectrometry    in Structural and Stereochemical Problems CCXXIV. Fragmentation of Cyclopropanes.

Org. Mass Spect, 7, 753 (1973).
By J. R. Dias and C. Djerassi.     

783.     Mass Spectrometry    in Structural and Stereochemical Problems CCXXV. Sulfur Migration in the [M-C2H4]+. Ion of S-Ethyl Thiobenzoate.

Org. Mass Spect., 7,         771 (1973).
By K. B.     Tomer and C. Djerassi.          

784.     Problems of Developing Nations – Need for a Flexible Patent System.

Proceed. of the 22nd Pugwash Conference on Science and World Affairs,      (Oxford, Sept. 7-12, 1972, pp. 339-343.
By C. Djerassi.

785.     Research Impact Statements (Editorial).

Science, 181, 115 (1973).
By C. Djerassi.

786.     Mass Spectrometry in Structural and Stereochemical Problems CCXXVI. The Electron Impact Induced Elimination of Water from 3-Hydroxy-5β-steroids.

Chem. Ber., 106, 1897 (1973).
By H. Klein and C. Djerassi.

787.     "Birth Control Prospects after 1984"

by Carl Djerassi in "Wednesday Night at the Lab" (ed. by K. L. Rinehart, W. O. McLure and T. L. Brown), Harper and Row Publ., New York, 1973, pp. 185-209.

788.     Characterization of 3β-Hydroxy-5α-Cholesta-9(11), 20(22)-dien-23-one-6α-yl-β-D-6'-deoxy glucoside from the Starfish Acanthaster planci.

Tetrahedron Letters, 2927 (1973).
By Y. M. Sheikh and C. Djerassi.

789.     Mass Spectrometry in Structural and Stereochemical Problems CCXXVIII. Application of Ion Cyclotron Resonance for Differentiation between Tautomers: Vinylthiol and Thioacetaldehyde.

J. Amer. Chem. Soc., 95, 5335 (1973).
By K. B. Tomer and C. Djerassi.

790.     Mass Spectrometry in Structural and Stereochemical Problems CCXXXIII. On the Stereochemical Dependence of the Retro-Diels-Alder Reaction.

J. Amer. Chem. Soc., 95, 5806 (1973).
By S. Hammerum and C. Djerassi.

791.     Steroid Contraceptives in the People’s Republic of China

New Engl. J. Med., 289, 533 (1973).
By C. Djerassi.

792.     Application of Artifical Intelligence for Chemical Inference IX. Analysis of Mixtures without Prior Separation as Illustrated for Estrogens.

J. Amer. Chem. Soc., 95, 6078 (1973).
By D. H. Smith, B. G. Buchanan, R. S. Engelmore, H. Adlercreutz and C. Djerassi.

793.     Mass Spectrometry in Structural and Stereochemical Problems CCXXX. Preparation of 5α,20α and 5α, 17α, 20α-cholestane-3β,6α-diol, Electron Induced Fragmentation of Steroidal Δ17(2), Δ20(21) and Δ20(22) Olefins.

J. Org. Chem., 38, 3545 (1973).
By Y. M. Sheikh and C. Djerassi.

794.     The Carbon-13 Nuclear Magnetic Resonance Spectra of Keto Steroids.

J. Org. Chem., 38, 3788 (1973).
By H. Eggert and C. Djerassi.

795.     Applications of Artificial Intelligence for Chemical Inference X. Intsum. A Data Interpretation and Summary Program Applied to the Collected Mass Spectra of Estrogenic Steroids.

Tetrahedron, 29, 3117 (1973).
By D. H. Smith, B. G. Buchanan, W. C. White, E. A. Feigenbaum, J. Lederberg and C. Djerassi.

796.     Applications of Artificial Intelligence for Chemical Inference XI. Analysis of Carbon-13 NMR data for Structure Elucidation of Acyclic Amines.

J. Chem. Soc. (Perkin II), 1753 (1973).
By R. E. Carhart and C. Djerassi.

797.     Magnetic Circular Dichroism Studies XXI. The Magnetic Circular Dichroism of Porphyrin Dications.

Ann. N.Y. Acad. Sci., 206, 223 (1973).
By G. Barth, R. E. Linder, E. Bunnenberg and C. Djerassi.

798.     Selective Deuterium Labeling of Steroidal Estrogens.

Steroids, 22, 591 (1973).
By J. H. Block and C. Djerassi.

799.     Mass Spectrometry in Structural and Stereochemical Problems CCXXXIV. Alkyl Pyridyl Ketones.

J. Org. Chem., 38, 4152 (1973).
By K. B. Tomer and C. Djerassi.

800.     Mass Spectrometry in Structural and Stereochemical Problems CCXXXI. Differentiation between Tautomeric Ion Structures (Phenol vs. Cyclohexadienone).

Tetrahedron, 29, 3491 (1973).
By K. B. Tomer and C. Djerassi.

801.     Steroids from Starfish.

Steroids, 22, 835 (1973).
By Y. M. Sheikh, M. Kaisin and C. Djerassi.

802.     Mass Spectrometry in Structural and Stereochemical Problems CCXL. The Effect of a 14α-Angular Methyl Group upon the Mass Spectral Fragmentation of 11-­ and 7-Keto Steroids.

J. Amer. Chem. Soc., 95, 8726 (1973).
By R. R. Muccino and C. Djerassi.

803.     Directions and Potentials of Contraceptive Research

Internat. J. Health Sciences, 3, No. 4, 583 (1973)
By C. Djerassi.

804.     Fertility Limitation through Contraceptive Steroids in the People's Republic of China.

Studies in Family Planning, 5, (I), 13-30 (1974).
By Carl Ojerassi.

805.     Chinese Birth Control and the "Paper Pi11".

Los Angeles Times, 6, Part VI, Feb. 10, 1974.
By Carl Djerassi.

806.     Mass Spectrometry in Structural and Stereochemical Problems CCXXIX. Electron-Impact-Induced Fragmentation of Boric Acid Esters.

Org. Mass Spect., 8, 217 (1974).
By S. Hammerum and C. Djerassi.

807.     Mass Spectrometry in Structural and Stereochemical Problems CCXXXVIII. The Effect of Heteroatoms upon the Mass Spectrometric Fragmentation of Cyclohexanones.

J. Org. Chem., 39, 279 (1974).
By J. H. Block, D. H. Smith and C. Djerassi.

808.     Some Observations on Current Fertility Control in China.

The China Quarterly, No. 57 (Jan.-March) 40 (1974).
By Carl Djerassi.

808A.   Swedish version of 808.

Internationella Studier, No. 1 (21-25)(1974).

808B.   Abbreviated version of 808.

Family Planning, 23, No. 1 (16-24)(1974).

809.     Medicine in China (Book Review).

Nature, 247, 581 (1974).
By Carl Djerassi.

810.     Mass Spectrometry in Structural and Stereochemical Problems CCXXXII. Hydrogen-Deuterium Randomization in 7-Methyl-4-Octanone-7-d at Times of 10-11 to l0-5 Sec Following Field Ionization.

J. Amer. Chem. Soc., 96, 1054 (1974).
By P. J. Derrick, A. M. Falick, A. L. Burlingame and C. Djerassi.

811.     Mass Spectrometry in Structural and Stereochemical Problems CCXXXIX.  Elucidation of theRing D Cleavage in Lanostane.

J. Amer. Chem. Soc., 96, 556 (1974).
By R. R. Muccino and C. Djerassi.

812.     Magnetic Circular Dichroism Studies XXV.  A Preliminary Investigation of Microsomal Cytochromes.

Proc. Nat. Acad. Sci., 71, No. 2, 399 (1974)
By P. M. Dolinger, M, Kielczewski, J. R. Trudell, G. Barth, R. E. Linder, E. Bunnenberg and C. Djerassi.

813.     Mass Spectrometry in Structural and Stereochemical Problems CCXXXV.  A Hidden Hydrogen Rearrangement in Long Chained Anilides.

Tetrahedron, 30, 17 (1974)
By K. B. Tomer and C. Djerassi.

814.     Mass Spectrometry in Structural and Stereochemical Problems CCXXXVII.  Electron-Impact-Induced Hydrogen Losses and Migrations in Some Aromatic Amides.

Org. Mass Spect., 9, 137 (1974)
By A. M. Duffield, G. de Martino and C. Djerassi.

815.     The Mechanism of Hydride Reduction of I-Alkyn-3-ols.

J. Org. Chem., 39, 968 (1974)
By B. Grant and C. Djerassi.

816.     Birth Control in the People’s Republic of China.

Bulletin, American Academy of Arts and Sciences, XXVII. No. 8, pp. 36-43 (1974).
By C. Djerassi.

817.     Magnetic Circular Dichroism Studies XXVIII.  Solvent Dependent Absorption and Magnetic Circular Dichroism Spectral Studies of Triphenylcarbenium Ion.

J. Amer. Chem. Soc., 96, 3309 (1974).
By Y. K. Mo., R. E. Linder, G. Barth, E. Bunnenberg and C. Djerassi.

818.     Mass Spectrometry in Structural and Stereochemical Problems CCXLI.  Investigation of the Electron Impact Induced Fragmentation of I-Hepten-3-ol by Ion Cyclotron Resonance.

J. Amer. Chem. Soc., 96, 3477 (1974)
By B. Grant and C. Djerassi.

819.     Mass Spectrometry in Structural and Stereochemical Problems CCXLII. Analysis of Mixtures Based on the Distribution of Fragment Ions Arising from Unimolecular Decomposition of Metastable Molecular Ions.

J. Amer. Chem. Soc., 96, 3482 (1974).
By D. H. Smith, C. Djerassi, K. H. Maurer and U. Rapp.

820.     Addition of Dichlorocarbene to Steroidal Olefins. Preparation of a Stereoisomer of Demethylgorgosterol, a Cyclopropane-containing Marine Sterol.

J. Chem. Soc., Perkin I, 909 (1974).
By Y. M. Sheikh, J. Leclercq and C. Djerassi.

820A.   Fertility Control Through Abortion: An Assessment of the Period 1950-1980 (See No. 742).

In "Biology for Survival" by R. Kane and G. A. Wistreich (eds.), Glencoe Press (1974), pp. 180-184.

821.     Mass Spectrometry in Structural and Stereochemical Problems CCXXXVI. Corrected Electron Impact Induced Migratory Aptitudes in Aryl Phenyl Carbonates.

Org. Mass Spect., 9, 551 (1974).
By D. A. Jaeger, K. B. Tomer, P. D. Woodgate, T. Gebreyesus, C. Djerassi and R. H. Shapiro.

 

822.     Terpenoids LXIX. Capnellane - A New Tricyclic Sesquiterpene Skeleton from the Soft Coral Capnella Imbricata.

Tetrahedron Letters, 2239 (1974).
By M. Kaisin, Y. M. Sheikh, L. J. Durham, C. Djerassi, B. Tursch, D. Daloze, J. C. Braekman, D. Losman and R. Karlsson.

823.     Magnetic Circular Dichroism Studies XXVI. Magnetic Circular Dichroism Spectra of Porphyrin Dianions.

J. Chem. Soc., Perkin II, 696 (1974).
By G. Barth, R. E. Linder, E. Bunnenberg and C. Djerassi.

824.     Mass Spectrometry in Structural and Stereochemical Problems CCXLIII. Functional Group Interaction. Unusual Fragmentations of Amides as Exemplified by Bipiperidyl Alkaloids.

J. Amer. Chem. Soc., 96, 4917 (1974).
By W. L. Fitch and C. Djerassi.

825.     Magnetic Circular Dichroism Studies XXVII. The Electronic Structure of Ring Halogenated Difluorophenylcarbenium Ions.

J. Amer. Chem. Soc., 96, 4569 (1974).
By Y. K. Mo, R. E. Linder, G. Barth, E. Bunnenberg and C. Djerassi.

826.     Magnetic Circular Dichroism Studies XXIV. Kinetic Studies of the Oxidation of Tryptophan in Proteins.

Liebig's Ann. Chem., 990 (1974).
By G. Barth, R. E. Linder, E. Bunnenberg and C. Djerassi.

827.     24-ξ Methylcholestane-3β,5α,6β,25-Tetrol 25-Monoacetate a Novel Polyhydroxylated Steroid from an Alcyonarian.

Steroids, 24, 387 (1974).
By J. M. Moldowan, B. M. Tursch and C. Djerassi.

828.     Alkaloid Studies LXVIII.  Novel Piperidyl Alkaloids from Lupinus Formosus.

J. Org. Chem., 39, 2974 (1974).
By W. L. Fitch, P. M. Dolinger and C. Djerassi.

829.     Insect Control of the Future: Operational and Policy Aspects.

Science, 186, 596 (1974).
By C. Djerassi, C. Shih-Coleman and J. Diekman.

830.     Alkaloid Studies LXVII. Reinvestigation of the Proton Resonance Spectrum of Vindolinine at 300 MHz.

Proc. Nat. Acad. Sci., 71, 3797 (1974).
By L. J. Durham, J. N. Shoolery and C. Djerassi.

831.     Magnetic Circular Dichroism Studies XXXIII. The MCD Spectrum of Formaldehyde Vapor.

Chem. Phys. Letters, 28, 490 (1974).
By R. E. Linder, G. Barth, E. Bunnenberg, C. Djerassi, L. Seamans and A. Moscowitz.

 

832.     Magnetic Circular Dichroism Studies XXXV.  A Comparison of Cytochromes P-450 and P-448.

Proc. Nat. Acad. Sci., 71, 4594 (1974).
By J. H. Dawson, P. M. Dolinger, J. R. Trudell, E. Bunnenberg, G. Barth, R. E. Linder and C. Djerassi.

833.     Steroids from Sponges.

Tetrahedron, 30, 4095 (1974).
By Y. M. Sheikh and C. Djerassi.

834.     Magnetic Circular Dichroism Studies XXIX. Magnetic Circular Dichroism Spectra of Magnesium and Zinc Octaethyl‑porphyrins and their Five- and Six-co-ordinated Complexes.

J. Chem. Soc. (Perkin Transactions II) 1706 (1974).
By G. Barth, R. E. Linder, E. Bunnenberg, C. Djerassi, L. Seamans and A. Moscowitz.

835.     Magnetic Circular Dichroism Studies XXX. Vibronic Intensity in Metalloporphyrins.

J. Chem. Soc. (Perkin Transactions II) 1712 (1974).
By R. E. Linder, G. Barth, E. Bunnenberg, C. Djerassi, L. Seamans and A. Moscowitz.

836.     Magnetic Circular Dichroism Studies XXXII. CNDO Calculations of the Magnetic Circular Dichroism Spectra of 7- and 9- Methyladenine.

Theoret. Chim. Acta (Berl.), 36, 135 (1974).
By R. E. Linder, H. Weiler-Feilchenfeld, G. Barth, E. Bunnenberg and C. Djerassi.

 

837.     A Stereoselective Synthesis of Two Stereoisomers of Demethylgorgosterol.

J. Amer. Chem. Soc., 97, 388 (1975)
By G. D. Anderson, T. J. Powers, C. Djerassi, J. Fayos and J. Clardy.

838.     Terpenoids LXX. Structure of the Sea Cucumber Sapogenin Holotoxinogenin.

J. Org. Chem., 40, 466 (1975).
By W. L. Tan, C. Djerassi, J. Fayos and J. Clardy.

839.     Magnetic Circular Dichroism Studies XXXVI. On the Magneto-Optical Activity of Singlet-Triplet Transitions in Near-Symmetric Tops.

J. Molecular Spectroscopy, 54, 412 (1975).
By L. Seamans, A. Moscowitz, R. E. Linder, E. Bunnenberg, G. Barth and C. Djerassi.

840.     Applications of Artificial Intelligence for Chemical Inference XIV.  A General Method for Predicting Molecular Ions in Mass Spectra.

J. Org. Chem., 40, 770 (1975).
By R. G. Dromey, B. G. Buchanan, D. H. Smith, J. Lederberg and C. Djerassi.

 

841.     2,6-Dibromophenol and 2,4,6-Tribromophenols - Antiseptic Secondary Metabolites of Phoronopsis Viridis.

Experientia, 31, 265 (1975).
By Y. Sheikh and C. Djerassi.

842.     Turning a Powder Keg into a Fire Hose.

Bulletin of the Atomic Scientists, 31, No. 6, 9 (1975).
By Carl Djerassi.

843.     Magnetic Circular Dichroism Studies XXXI.

Thicketones Spectrochimica Acta, 31A, 507 (1975).
By J. P. Engelbrecht, G. D. Anderson, R. E. Linder, G. Barth, E. Bunnenberg, C. Djerassi, L. Seamans and A. Moscowitz.

844.     Magnetic Circular Dichroism Studies XXXIV. Improved Instrumentation for MCD Measurements.

Anal. Biochem., 65, 100 (1975).
By G. Barth, J. H. Dawson, P. M. Dolinger, R. E. Linder, E. Bunnenberg and C. Djerassi.

845.     Magnetic Circular Dichroism Studies XXXVII.  Theoretical Analysis of the MCD Spectra of Some Singlet-Triplet Transitions in Formaldehyde.

J. Molecular Spectroscopy, 56, 441 (1975).
By L. Seamans, A. Moscowitz, R. E. Linder, E. Bunnenberg, C. Barth and C. Djerassi.

846.     Perkin Medal Award Address: Mao Tse Tung says "Mankind Ought to Exercise Self Control!" Freeman Dyson Asks "What Are the Hidden Costs of Saying No?"

Chemistry & Industry (London), 593 (1975).
By Carl Djerassi.

847.     Mass Spectrometry in Structural and Stereochemical Problems CCXLV.  The Electron Impact Induced Fragmentation Reactions of 17-Oxygenated Progesterones.

Steroids, 25, 817 (1975).
By S. Hammerum and C. Djerassi.

 

848.     Synthesis of Sterols with Modified Side Chains.

Steroids, 26, 129 (1975).
By Y. M. Sheikh and C. Djerassi.

 

849.     24ξ-Methylcholestane-3β,5α,6β,12β,25-Pentol 25- Monoacetate, a Novel Polyoxygenated Marine Sterol.

Steroids, 26, 107 (1975).
By J. M. Moldowan, W. L. Tan and C. Djerassi.

 

 

850.     Natural Products Chemistry, 1950-1980 - A Personal View.

Pure & Applied Chemistry, 41, 113 (1975).
By Carl Djerassi.

 

851.     Applications of Artificial Intelligence for Chemical Inference XVII. An Approach to Computer Assisted Elucidation of Molecular Structure.

J. Amer. Chem. Soc., 97, 5755 (1975).
By R. E. Carhart, D. H. Smith, H. Brown and C. Djerassi.

 

852.     C13 NMR Spectra of Sapogenins.

Tetrahedron Lett., 3635 (1975).
By H. Eggert and C. Djerassi.

853.     Optical Rotatory Dispersion Studies CXX. Synthesis and Circular Dichroism of Chiral 3-Deuterio­cyclopentanone.

Tetrahedron Lett., 3671 (1975).
By J. W. Simek, D. C. Mattern and C. Djerassi.

 

854.     Magnetic Circular Dichroism of Nitroalkanes.

J. Chem. Soc. Chem. Comm., 672 (1975)
By G. Barth, N. Waespe-Sarcevic, R. E. Linder, E. Bunnenberg, C. Djerassi, L. Seamans and A. Moscowitz.

 

855.     Mass Spectrometry in Structural and Stereochemical Problems CCXLIV. The Influence of Substituents and Stereochemistry on the Mass Spectral Frag­mentation of Progesterone.

Tetrahedron, 31, 2391 (1975).
By S. Hammerum and C. Djerassi.

    

856.     Magnetic Circular Dichroism of Ferrous Carbonyl Adducts of Cytochromes P-450  and P-420 and Their Synthetic Models: Further Evidence for Mercaptide as the Fifth Ligand to Iron.

Proc. Nat. Acad. Sci., 73, 6 (1976)

by J. P. Collman, T. N. Sorrell, J.H. Dawson, J. R. Trudell, E. Bunnenberg and C. Djerassi.

 

857.     Carbon-13 Nuclear Magnetic Resonance Spectra of Hydroxy Steroids.

J. Org. Chem., 41, 71 (1976)

by H. Eggert, C. L. VanAntwerp, N. S. Bhacca and C. Djerassi.

 

858.     A Modest Proposal for Increased North-South Interaction Among Scientists.

Bulletin of the Atomic Scientists, 32, No. 2, 56 (1976)

by C. Djerassi.

 

859.     Applications of Artificial Intelligence for Chemical Inference XIX. Computer Generation of Ion Structures.

Org. Mass Spectrom., 11, 86 (1976)

 

860.     Magnetic Circular Dichroism Studies XXXIX. The MCD Spectrum of Formaldehyde-d2 Vapor.

Chemical Physics Letters, 38, 28 (1976)

by R. E. Linder, G. Barth, E. Bunnenberg, C. Djerassi, L. Seamans and A. Moscowitz.

 

860A.   A High Priority? Research Centers in Developing Nations

                     by C. Djerassi (see No. 620).

Reprinted from Bulletin of the Atomic Scientists, 24,  23 (1968), in Views of Science, Technology and Development, E. and V. Rabinowitch, eds., Pergamon Press, Oxford, 1975.

 

861.     Magnetic Circular Dichroism Studies XLI. Magnetic Circular Dichroism of the 3B3u ß1Ag  Excitation in Pyrazine.

Chem. Phys,, 13, 135 (1976)

by L. Seamans, A. Moscowitz, R. E. Linder, G. Barth, E. Bunnenberg and C. Djerassi.

 

862.     The Mechanism of the Cyanoborohydride Reduction of ,Unsaturated Tosylhydrazones.

J. Amer. Chem. Soc., 98, 2276 (1976)

by E. J. Tayler and C. Djerassi.

 

863.     Terpenoids LXXI. Chemical Studies of Marine Invertebrates XIV. Four Representatives of a Novel Sesquiterpene Class: The Capnellane Skeleton.

Tetrahedron Letters, No. 32, 1171 (1976)

by Y. M. Sheikh, G. Singy, M. Kaisin, H. Eggert, C. Djerassi, B. Tursch, D. Daloze and J. C. Braekman.

 

864.     Magnetic Circular Dichroism Studies XLII. The Vapor Phase Magnetic Circular Dichroism Spectrum of the 3Auß1Ag Excitation of Glyoxal.

Chem. Phys. Letters, 39, 411 1976

by R. E. Linder, G. Barth, E. Bunnenberg, C. Djerassi, L. Seamans and A. Moscowitz.

 

865.     Magnetic Circular Dichroism Studies XLIII. Oxidized Cytochrome P-450: Magnetic Circular Dichroism Evidence for Thiolate Ligation in the Substrate-Bound Form. Implications for the Catalytic Mechanism.

J. Amer. Chem. Soc., 98, 3707 (1976)

by J. H. Dawson, R. H. Holm, J. R. Trudell, G. Barth, R. E. Linder, E. Bunnenberg, C. Djerassi and S. C. Tang.

 

866.     Magnetic Circular Dichroism Studies XLIV. Chloroperoxidase: Evidence for P-450 Type Heme Environment from Magnetic Circular Dichroism Spectroscopy.

J. Amer. Chem. Soc., 98, 3709 (1976)

by J. H. Dawson, J. R. Trudell, G. Barth, R. E. Linder, E. Bunnenberg, C. Djerassi, R. Chiang and L. P. Hager.

 

 

867.     Ronneby 1967 Revisited.

Proceedings of the 25th Pugwash Conference on Science and World Affairs, Madras, Jan. 13-19, 1976, 227 (1976)

by C. Djerassi.

 

868.     Applications of Artificial Intelligence for Chemical Inference XXI. Chemical Studies of  Marine Invertebrates XVII. The Computer-Assisted Identification of [+]-Palustrol in the Marine Organism Cespitularia sp., aff. Subviridis.

Tetrahedron Letters, No. 32, 1807 (1976)

by C. J. Cheer, D.H. Smith, C. Djerassi, B. Tursch, J. C. Braekman and D. Daloze.

869.     Applications of Artificial Intelligence for Chemical Inference XXII. Automatic Rule  Formation in Mass Spectrometry by Means of the Meta-DENDRAL Program.

J. Amer. Chem. Soc., 98, 6168 (1976)

by B. G. Buchanan, D. H. Smith, W. C. White, R. G. Gritter, E. A. Feigenbaum, J. Lederberg and C. Djerassi.

 

870.     Optical Rotatory Dispersion Studies CXXI. Verification of the Absolute Configuration of 2-Methylcyclohexanone.

Tetrahedron Letters, No. 43, 3877 (1976)

by C. J. Cheer and C. Djerassi.

 

871.     Magnetic Circular Dichroism Studies XLVII. Cyclobutanones and Acyclic Ketones.

Spectroscopy Letters, 9 (11), 777 (1976)

by J. S. Dixon, R. E. Linder, G. Barth, E. Bunnenberg, C. Djerassi, L. Seamans and A. Moscowitz.

 

872.     Occurrence of 19-Nor Cholesterol and Homologs in Marine Mammals.

Tetrahedron Letters, No. 39, 3491 (1976)

by S. Popov, R. M. K. Carlson, AM. Wegmann and C. Djerassi.

 

873.     Minor and Trace Sterols in Marine Invertebrates.

1. General Methods of Analysis.

Steroids, 28, 699 (1976)

by S. Popov, R. M. K. Carlson, A. Wegmann and C. Djerassi.

 

874.     Mass Spectrometry in Structural and Stereochemical Problems CCXLVI. Electron Impact Induced Fragmentation of Juvenile Hormone Analogs.

Organic Mass Spectrometry, 11, 1120 (1976)

by L. L. Durham, C. A. Henrick, D. H. Smith and C. Djerassi.

 

875.     The Manufacture of Steroidal Contraceptives: Technical Versus Political               .           Aspects.

Proc. Royal Society of London. B. 195, 175 (1976)

by C. Djerassi.

 

876.     Bioconversion of Lanosterol into Holotoxinogenin, a Triterpenoid from the Sea Cucumber Stichopus Californicus.

Journal of the Chemical Society Chemical Communications, (London),1057 (1976)

by C. Djerassi.

 

877.     Mass Spectrometry in  Structural and Stereochemical  Problems CCXLVII.  Electron-Impact Induced Fragmentation of Allenes.

J. Amer. Chem. Soc., 99, 532 (1977)

by J. R. Wiersig, A. N. H. Yeo and C. Djerassi.

 

 

878.     Magnetic Circular Dichroism Studies LI. Magnetic Circular Dichroism Studies of Non-Iron “Hyper” Porphyrin Complexes as Models for Reduced + CO Cytochrome P-450.

J. Amer. Chem. Soc., 99, 641 (1977)

by J. H. Dawson, J. R. Trudell, G. Barth, R. E. Linder, E. Bunnenberg, C. Djerassi, M. Gouterman, C. R. Connell and P. Sayer.

 

879.     Magnetic Circular Dichroism Studies XLVIII. Structural-Vibrational Effects in Magnetic Circular Dichroism Spectra.

J. Amer. Chem. Soc., 99, 724 (1977)

by L. Seamans, A. Moscowitz, R. E. Linder, K. Morrill,  J. S. Dixon, G. Barth, E. Bunnenberg and C. Djerassi.

 

880.     Magnetic Circular Dichroism Studies XLIX. An Expiscation of Structural-Vibrational Effects in Magnetic Circular Dichroism of Saturated Ketones.

J. Amer. Chem. Soc., 99, 727 (1977)

by R. E. Linder, K. Morrill,  J. S. Dixon, G. Barth, E. Bunnenberg, C. Djerassi, L. Seamans and A. Moscowitz.

 

881.     Novel Marine Sterols with Modified Bile Acid Side Chains from the Sea Pen Ptilosarcus gurneyi.

Tetrahedron Letters, No. 8, 683 (1977)

by D. J. Vanderah and C. Djerassi.

 

882.     Additivity Relationships in Carbon-13 Nuclear Magnetic Resonance Spectra of Dihydroxy Steroids.

J. Org. Chem., 42, 789 (1977)

by C. VanAntwerp, H. Eggert, G. D. Meakins, J. O. Miners and C. Djerassi.

 

883.     Magnetic Circular Dichroism Studies XLV. A Comparison between the Magnetic Circular Dichroism and Shpol’skii Spectra of Palladium, Zinc, and Magnesium Porphin.

J. Chem. Soc., Perkin II, 337 (1977)

by G. Barth, R. E. Linder, N. Waespe-Sarcevic, E. Bunnenberg, C. Djerassi, Y. J. Aronowitz and M. Gouterman.

884.     Isolation, Structure Determination and Synthesis of New Acetylenic Steroids from the Sponge Calyx nicaaensis.

Helv. Chim. Acta, 60, 475 (1977)

by E. Steiner, C. Djerassi, E. Fattorusso, S. Magno, L. Mayol, C. Santacroce and D Sica.

 

 

 

885.   Sterols from Marine Sources.

                     in Marine Natural Products Chemistry (D. J. Faulkner and W. H. Fenical, eds.),

Plenum Publishing Corp., New York, 1977, pp. 111-123,

by C. Djerassi, R. M. K. Carlson, S. Popov and T. H. Varkony.

 

886.     Magnetic Circular Dichroism Studies XLVI. Structure and the Magnetic Circular Dichroism of Trans-2-decalones and Bicyclo[2.2.2]octan-2-ones.

Tetrahedron Letters, No. 33, 907 (1977)

by K. Morrill, R. E. Linder, E. M. Bruckmann, G. Barth, E. Bunnenberg, C. Djerassi, L. Seamans and A. Moscowitz.

 

887.     Mass Spectrometry in Structural and Stereochemical Problems CCXLVIII. Stereochemical Effects in Electron Impact Induced Retro-Diels–Alder Fragmentations.

J. Amer. Chem. Soc., 99, 3432 (1977)

by J. S. Dixon, I. Midgley and C. Djerassi.

 

888.     Magnetic Circular Dichroism Studies 1. Convenient Quantitative Determination of Uraporphyrin and Coproporphyrin in Urine Samples.

Anal. Biochem., 80, 20 (1977)

by G. Barth, R. Records, R. E. Linder, E. Bunnenberg, and C. Djerassi.

 

889.     The Citizen and the Expert.

in Science, An American Bicentennial View, pp. 63-66,

National Academy of Sciences, Washington, D.C., 1977.

by C. Djerassi.

 

890.     Terpenoids LXXIII. Sinularene, a Sesquiterpene Hydrocarbon Based on a Novel Skeleton from the Soft Coral, Sinularia mayi.

Tetrahedron Letters, No. 28, 2395 (1977)

by C. M. Beechan, C. Djerassi, J. S. Finer and J. Clardy.

 

891.     Factors Governing the Relative Stabilities of the C/D Cis and Trans Ring Junctures in 8-11-Keto Steroids.

J. Org. Chem., 42, 2365 (1977)

by D. G. Patterson, C. Djerassi, Y. Yuh and N. L. Allinger.

 

892.     Biosynthesis of Sterols in the Sea Cucumber Stichopus Californicus.

Tetrahedron Letters,  No. 36, 3111 (1977)

by Y. M. Sheikh and C. Djerassi.

 

893.     Mass Spectrometry in Structural and Stereochemical Problems CCL. Characteristic Fragmentations of Cholesterol Acetate.

J. Org. Chem., 42, 2799 (1977)

by L. G. Partridge and C. Djerassi.

 

894.     Pesticide Development — Sociological and Etiological Background.

in Proceedings of the XV International Congress of Entomology, pp. 712-713, Washington, D.C., August 19-27, 1976.

by C. Djerassi.

 

895.     Terpenoids—LXXII. Chemical Studies of Marine Invertebrates—XXVI. 9(12)-Capnellene-3,8,10,14-Tetrol, a Novel Polyoxygenated Sesquiterpene from the Alcyonarian Capnella imbricata.

Tetrahedron Letters, No. 33, 2115 (1977)

by Y. M. Sheikh, C. Djerassi., J. C. Braekman, D. Daloze, M. Kaisin, B. Tursch and R. Karlsson.

 

896.     Synthesis of Cholest-5-ene-3,11,15 -triol-7-one. A Model for the Steroid Nucleus of Oogoniol, a Sex Hormone of the Water Mold Achlya.

J. Org. Chem., 42, 3571 (1977)

by E. J. Taylor and C. Djerassi.

 

897.     A Convenient Synthesis of Progesterone from Stigmasterol.

J. Org. Chem., 42, 3633 (1977)

by P. Sundararaman and C. Djerassi.

 

898.     Mass Spectrometry in Structural and Stereochemical Problems CCXLIX. Elucidation of the Course of the Characteristic Ring D Fragmentation of Unsaturated Steroids.

J. Amer. Chem. Soc., 99, 7686 (1977)

by L. G. Partridge, I. Midgley and C. Djerassi.

 

899.     Magnetic Circular Dichroism Studies LIII. The MCD Spectra of Some 8-Azapurines.

Theoret. Chim. Acta (Berl.), 46, 79 (1977)

by H. Weiler-Feilchenfeld, R. E. Linder, G. Barth, E. Bunnenberg and C. Djerassi. 

 

900.     Magnetic Circular Dichroism Studies LII. Magnetic Circular Dichroism of Purified Forms of Rabbit Liver Cytochromes P-450 and P-420.

Biochemistry, 17, 33 (1978)

by J. H. Dawson, J. R. Trudell, R. E. Linder, G. Barth, E. Bunnenberg and C. Djerassi.

 

901.     Optical Rotatory Dispersion Studies CXXII. Synthesis and Circular Dichroism of (3S)-Deuteriocyclohexanone.

Tetrahedron Letters, No. 6, 535 (1978)

by C. Djerassi, C. L. VanAntwerp and P. Sundararaman.

 

902.     Hommes Affamés, Parasites Affamés.

Prospective et Santé, No. 4, 87 (1978)

by C. Djerassi.

 

903.     Marine Natural Products. Synthesis of Four Naturally Occurring 20H Cholanic Acid Derivatives.

J. Org. Chem., 43, 1442 (1978)

by D. J. Vanderah and C. Djerassi.

 

904.     One Step Conversion of Aldehydes to Esters.

Tetrahedron Letters, No. 19, 1627 (1978)

by P. Sundararaman, E. C. Walker and C. Djerassi.

 

 

905.     Terpenoids LXXV. Δ9(12)-Capnellene, a New Sesquiterpene Hydrocarbon from the Soft Coral Capnella Imbricata.

   Tetrahedron Letters, No. 19, 1671 (1978)

by E. Ayanoglu, T. Gebreyesus, C. M. Beechan, C. Djerassi and M. Kaisin.

 

906.     Applications of Artificial Intelligence for Chemical Inference XXVII. Computer-Assisted Structure Manipulation. Studies in the Biosynthesis of Natural Products.

Tetrahedron Letters, No. 34, 841 (1978)

by T. H. Varkony, D. H. Smith and C. Djerassi.

 

907.     Recent Advances in the Mass Spectrometry of Steroids.

Pure and Appl. Chem., 50, 171 (1978)

by C. Djerassi.

 

908.     Optical Rotatory Dispersion Studies CXXIII. Experimental Evidence for Preference of Axial Deuterium over Axial Hydrogen.

J. Amer. Chem. Soc., 100, 3965 (1978)

by S.F. Lee, G. Barth, K. Kieslich and C. Djerassi.

909.     Optical Rotatory Dispersion Studies CXXIV. Synthesis and Circular Dichroism of 3(S)a- and 3(R)e-Deuterio-4(R)-t-Butyl-cyclohexanone and 2(R)a- and 2(S)e-Deuterio-4(R)-Isopropyl-cyclohexanone.

Tetrahedron Letters, No. 28,  2457 (1978)

by P. Sundararaman and C. Djerassi.

 

910.     Minor and Trace Sterols in Marine Invertebrates IV. Identification of Short Side Chain Sterols in the Sponge Damiriana hawaiiana.

Helvetica Chimica Acta, 61, 1470 (1978)

by C. Delseth, R. M. K. Carlson, C. Djerassi, T. R. Erdman and P. J. Scheuer.

 

911.     Coping with Interdependence: The Population Problem.

in Proceedings of the Symposium on Energy, Food, Population and World Interdependence, pp. 40-43, 5355, Committee on Chemistry and Public Affairs, American Chemical Society, Washington, D.C., 1978.

by C. Djerassi.

 

912.     Minor and Trace Sterols in Marine Invertebrates V. Isolation, Structure Elucidation and Synthesis of 3-Hydoxy-26,27-Bisnorcholest-5-en-24-one from the Sponge Psammaplysilla purpurea.

Steroids, 31, 815 (1978)

by E. Ayanoglu, C. Djerassi, T. R. Erdman and P. J. Scheuer.

 

913.     Terpenoids LXXIV. The Sesquiterpenes from the Soft Coral Sinularia mayi.

Tetrahedron Letters, No. 34, 2503 (1978)

by C. M. Beechan, C. Djerassi and H. Eggert.

 

914.     Minor and Trace Sterols in Marine Invertebrates VII. 24-Ethyl-5,24(28),28-cholestatrien-3ol — a Naturally Occurring Allenic Marine Sterol.

J. Amer. Chem. Soc., 100, 5574 (1978)

by N. Theobald, J. N. Shoolery, C. Djerassi, T. R. Erdman and P. J. Scheuer.

 

915.     Applications of Artificial Intelligence for Chemical Inference XXVIII. Computer-Assisted Simulation of Chemical Reaction Sequences. Applications to Problems of Structure Elucidation.

J. Chem. Inf. Comput. Sci., 18, 168 (1978)

by T. H. Varkony, R. E. Carhart, D. H. Smith and C. Djerassi.

 

916.     Birth Control after 1984 Revisited.

Bull. Amer. Acad. of Arts and Sciences, 32 (1), 22 (1978)

by C. Djerassi.

 

917.     Determination of the Absolute Configuration of Stelliferasterol and Strongylosterol — Two Marine Sterols with “Extended” Side Chains.

Tetrahedron Letters, No. 45, 4369 (1978)

by N. Theobald and C. Djerassi.

 

918.     Minor and Trace Sterols in Marine Invertebrates IX. Verongulasterol — A Marine Sterol with a Novel Side Chain Alkylation Pattern.

Tetrahedron Letters, No. 45, 4373 (1978)

by W. C. M. C. Kokke, W. H. Fenical, C. S. Pak and C. Djerassi.

 

919.     Optical Rotatory Dispersion Studies CXXVI. Synthesis and Chiroptical Properties of Cyclohexanones with Chiralty Solely Due to Isotopic Substitution: 12CH3 vs. 13CH3 and CH3 vs. CD3.

Tetrahedron Letters, No. 45, 4377 (1978)

by C. S. Pak and C. Djerassi.

 

920.     Minor and Trace Sterols in Marine Invertebrates X. Isolation and Structure of 26,27-Cycloaplysterol (Petrosterol). A Cyclopropane-Containing Marine Sterol.

Tetrahedron Letters, No. 45, 4379 (1978)

by B. N. Ravi, W. C. M. C. Kokke, C. Delseth and C. Djerassi.

 

921.     Minor and Trace Sterols in Marine Invertebrates VIII. Isolation, Structure Elucidation and Partial Synthesis of Two Novel C30 Marine Sterols — Stelliferasterol and Isostelliferasterol.

J. Amer. Chem. Soc., 100, 7677 (1978)

by N. Theobald, R. J. Wells and C. Djerassi.

 

922.     Optical Rotatory Dispersion Studies CXXV. Independent Evidence for Preference of Axial Deuterium vs. Axial Hydrogen through Variable-Temperature Circular Dichroism Spectra of (4S)-2,2-Dimethyl-4-deuteriocyclohexanone and (3S)-3 Deuterio-4,4-dimethylcyclohexanone.

J. Amer. Chem. Soc., 100, 8010 (1978)

by S. F. Lee, G. Barth and C. Djerassi.

 

923.     Partial Reduction of Aquomethemoglobin on a Sephadex G-25 Column as Detected by Magnetic Circular Dichroism Spectroscopy and Revised Extinction Coefficients for Aquomethemoglobin.

Analytical Biochemistry, 90, 474 (1978)

by R. E. Linder, R. Records, G. Barth, E. Bunnenberg, C. Djerassi, B. E. Hedlund, A. Rosenberg, E. S. Benson, L. Seamans and A. Moscowitz.

 

 

924.     Minor and Trace Sterols in Marine Invertebrates VI. Occurrence and Possible Origins of Sterols Possessing Unusually Short Hydrocarbon Side Chains.

Bioorganic Chemistry, 7, 453 (1978)

by R. M. K. Carlson, S. Popov, I. Massey, C. Delseth, E. Ayanoglu, T. H. Varkony and C. Djerassi.

 

925.     A Novel Role of Computers in the Natural Products Field.

Naturwissenschaften, 66, 9 (1979)

by C. Djerassi, D. H. Smith and T. H. Varkony

 

 

926.     The Synthesis of Demethylgorgosterol.

Tetrahedron Letters No. 9, 767 (1979)

by R. D. Walkup, G. D. Anderson and C. Djerassi.

.

927.     Applications of Artificial Intelligence for Chemical Inference XXIX. Exhaustive Generation of Stereoisomers for Structure Elucidation.

J. Amer. Chem. Soc., 101, 1216 (1979)

by J. G. Nourse, R. E. Carhart, D. H. Smith. and C. Djerassi.

 

928.    Minor and Trace Sterols in Marine Invertebrates XI. 5-24-Norcho1estan-3-o1 and (24Z)-Stigmasta-5,7,24(28)-trien3-ol,  Two New Marine Sterols from the Pacific Sponges Terpios Zeteki and Dysidea Herbacea.

He1v. Chim. Acta, 62, 101 (1979).

By C. Delseth, L. Tolela, P. J. Scheuer, R. J. Wells and C. Djerassi.

 

929.   Future Prospects in Male Contraception.

The Stanford Magazine, 7, No.1, 58-63, 71 (1979).

By Carl Djerassi.

 

930.   Stereochemical Course of the Chemical and Catalytic Reduction of 11-Oxo-5,14-cho1est-8-en-3-o1. Synthesis of 8α,9α, 14β- ,8α, 9β,14β-, and 8β,9α,14β-Steroids.

J. Org. Chem., 44, 1866 (1979).

By D. G. Patterson and C. Djerassi.

 

931.   Terpenoids - LXXVI.   Precapnelladiene, a Possible Bio-synthetic Precursor of the Capnellane Skeleton.

Tetrahedron Letters, No. 35, 1035 (1979).

By E. Ayanog1u, T. Gebreyesus, C. M.  Beechan and C. Djerassi.

 

932.  Sterols with Cyclopropane-Containing Side Chains: Synthesis and Acid Isomerization.

Helv. Chim. Acta, 62, 1210 (1979).

By C. Tarchini, M. Rohmer and C. Djerassi.

 

933.   Minor and Trace Sterols in Marine Invertebrates Xll. Occurrence of 24(R+S)- Isopropenylcholesterol, 24(R+S)-Methylcholesta-5, 25-dien-3-ol, and 24(R+S)- Methylcholesta-7, 25-dien-3-ol in the Caribbean Sponge, Veronqia Cauliformis.

Helv. Chim. Acta, 62, 1310 (1979)

By W.C.M.C. Kokke, C. S. Pak, W. Fenical and C. Djerassi.

 

934.   Structural and Stereochemical Applications of Mass Spectrometry in the Marine Sterol Field 252. Synthesis and Electron Impact Induced Mass Spectral Fragmentation of ∆24  and ∆24(28)-3-Hydroxy-∆5-sterols.

J. Org. Chem.,  44,,  2448 (1979)

By I.J. Massey and C. Djerassi..

 

935.        Use of  N-Lithioethylenediamine in the Double Bond Isomerization and Degradation of Sterol Side Chains.

                  Tetrahedron Letters, No. 35, 1591 (1979)

By E. Ayanoglu,  A. Chan and C. Djerassi.

 

936.   Recent Progress in the Marine Sterol Field.

Pure and Applied Chemistry,  51, 1815 (1979)

By C. Djerassi, N. Theobald, W.C.M.C. Kokke,

C.S. Pak, and R.M.K. Carlson.

 

937.   Isolation and Synthesis of  23-Methyl-22-dehydrocholesterol - A Marine Sterol of Biosynthetic Significance

Tetrahedron Letters, No. 38, 3601 (1979)

By W.C.M.C. Kokke, N.W. Withers, I.J. Massey,

W. Fenical and C. Djerassi.

938.   Isolation of Sterols with Cyclopropyl-Containing Side Chains from the Cultured Marine Alga Peridinium Foliaceum.

Tetrahedron Letters, No. 38, 3605 (1979)

By N.W. Withers, W.C.M.C. Kokke, M. Rohmer,

W. Fenical and C. Djerassi.

 

939.  Side Chain-Hydroxylated Sterols of the Red Alga Asparagopsis Armata:  Significant Products or Artifacts Due to Autoxidation?

Steroids, 34, 163 (1979)

By C. Francisco, G. Combaut, J. Teste,

 C. Tarchini and C. Djerassi.

940.   Stereospecific Synthesis of the Side Chain of the Steroidal Plant Sex Hormone Oogoniol.

J. Org. Chem., 44, 3374 (1979)

By J.R. Wiersig, N. Waespe-Sarcevic and

C. Djerassi

 

941.   Minor and Trace Sterols in Marine Invertebrates XIII.  Isolation, Structure Elucidation and Partial Synthesis of  Xestosterol, a Biosynthetically Significant Sterol from the Sponge Xestospongia Muta.

J. Org. Chem., 44, 3385 (1979)

By W.C.M.C. Kokke, C. Tarchini, D.B. Stierle

and C. Djerassi.

 

942.   Synthesis of 3-Hydroxy-22, 23-methano-24-norcholest-5-ene for Comparison with Cystosterol.

Helv. Chim. Acta, 62, 1940 (1979)

By F. Gulacar and C. Djerassi.

 

943.   Magnetic Circular Dichroism Studies LV. The Aliphatic Nitro Chromophore.

J. Chem. Soc., Perkin II, 907 (1979)

By G. Barth, N. Waespe-Sarcevic, R.E. Linder,

E. Bunnenberg, C. Djerassi, L. Seamans and

A. Moscowitz.

 

944.   Optical Rotatory Dispersion Studies 127. Chirality Due to l3C Substitution.  Synthesis and Chiroptical Properties of (l S)-2-Adamantanone-4-13C and (1S)-2,4 –Adamantanedione-4-13C.

J. Amer. Chem. Soc., 101, 5155 (1979);  correction: page 7439 

By Y.L. Sing, H. Numan, Hans Wynberg and Carl Djerassi.

 

945.   Preface to "In  Celebration of  Paul Klee",   Stanford Art Book 18,  Stanford University, 1979,  pp. 7-8.  By Carl Djerassi.

 

946.   Minor and Trace Sterols in Marine Invertebrates XIV. Ergosta-5,7,9 (11),22-tetraen-3-o1 and Its 24-Ethyl Homolog.  Two New Marine Sterols from the Red Sea Sponge Biemmna Fortis.

Helv. Chim. Acta, 62, 2037 (1979)

By C. Delseth, Y. Kashman and C. Djerassi.

 

947.   Mass Spectrometry in Structural and Stereochemical Problems 251.  Mass Spectrometric Studies with Unsaturated Hydrocarbons:  Halogen Migration in Acetylenes and Olefins.

Z. für Naturforschung, 34(B) 1612 (1979)

By K. K. Mayer,  I.  Matlovic, E. Fischer and  C.  Djerassi.

 

948.   Mass Spectrometry in Structural and Stereochemical Problems 254.  Elucidation of the Course of the Electron Impact Induced Fragmentation of ,-Unsaturate 3-Keto Steroids.

J. Amer. Chem. Soc., 102, 807 (1980)

By F. J. Brown and C. Djerassi.

 

 

 

949.    A New Look at Contraceptive Testing.

                        IPPF Medical Bulletin, 14, No.1, 1-2 (1980)

                        By Carl Djerassi. 

 

950.   "The U. S. Is Playing Politics with Contraceptive Research".

In Commentary/Today, Oakland Tribune, February 21, 1980.

By Carl Djerassi.

 

951.   Mass Spectrometry in Structural and Stereochemical Problems 255.  Electron Impact Induced Fragmentation of Steroidal Diketones with ‘Abnormal’  Stereochemistry.

Org. Mass Spectrom., 15, 41 (1980)

By D. G.Patterson, A. Lavanchy and C. Djerassi.

 

952.   Magnetic Circular Dichroism Studies LVII. The Magnetic  Circular Dichroism Spectrum of Carbon Disulfide.

J. Chem.  Phys., 72, 1423 (1980)

By G. Barth, R. E. Linder, E. Bunnenberg, C.

Djerassi, L. Seamans and  A. Moscowitz.

 

953.   Magnetic Circular Dichroism Studies LVIII. Theoretical Analysis of the Magnetic Circular Dichroism Spectrum of Carbon Disulfide.

J. Chem. Phys., 72, 1428 (1980)

By L. Seamans, A. Moscowitz, R. E. Linder, G.

Barth, E. Bunnenberg and C. Djerassi.

954.   Minor and Trace Sterols in Marine Invertebrates XV. Ficisterol  ( 23-Ethyl-24-methyl-27-norcholesta-5,25-dien-3-o1).  A Biosynthetically Unprecedented Sterol from the Marine Sponge  Petrosia Ficiformis.

J. Amer. Chem. Soc., 102, 2133 (1980)

By M. W. Khalil, L. J. Durham, C. Djerassi and D. Sica.

 

955.    "Biological Implications of Recent Discoveries in the Marine Sterol Field".  In Frontiers of Bio-organic Chemistry  and  Molecular Biology     (S. N. Ananchenko, Ed.),            .        .           Pergamon Press, Oxford, 1980, pp. 211-224.

By  R. M. K. Carlson, C. Tarchini and C. Djerassi.

 

 956.   Optical Rotatory Dispersion Studies 128. Octant Contributions of Methyl Groups in 4-tert-Butylcyclohexanones.

J. Amer. Chem. Soc., 102, 2737 (1980)

By J. P. Konopelski, P. Sundararaman, G. Barth and C. Djerassi.

 

957.     "The Contraceptive Supermarket".  In INA Daily Report for Wednesday,  April 16,     1980. Independent News Alliance, New York, 1980.  By Carl Djerassi.

 

 

 

 

 958.    Isolation of Two New C30 Sterols, (24E)-24N-Propylidene-cholesterol and 24-N-Propylcholesterol, from a Cultured Marine Chrysophyte.

Steroids, 35, 219 (1980)

By M. Rohmer, W.C.M.C. Kokke, W. Fenical and C. Djerassi.

 

 959.   Synthesis of Ficisterol - The First Natural Sterol with 23-Ethyl Substitution.

Tetrahedron Letters, No. 21, 1603 (1980)

By  M. Karpf and C. Djerassi.

 

 960.   Minor and Trace Sterols in Marine Invertebrates XVI. 3-Hydroxymethyl-A-Nor-5-Gorgostane, a Novel Sponge Sterol.

Steroids, 35, 295 (1980)

By L. Bohlin, H. P. Gehrken, P. J. Scheuer and C. Djerassi.

 

961.     Synthesis of Chiral Conformationally Fixed Cyclohexanones.

J. Org. Chem., 45, 2297 (1980)

By J. P. Konopelski and C. Djerassi.

 

962.    Optical Rotatory Dispersion Studies 130.  Additivity of Deuterium Octant Contributions in Cyclohexanone.

J. Org. Chem., 45, 2680 (1980)

By M. T. Edgar, G. Barth and C. Djerassi.

 

963.   Optical Rotatory Dispersion Studies 129.  Conformational Isotope Effects and Octant   Contributions of CD3 and 13CH3 Groups in Cyclohexanone.

J. Amer. Chem. Soc., 102, 4784 (1980)

By S-F.  Lee, M. T. Edgar, C. S. Pak, G. Barth and C. Djerassi.

 

964.   Minor and Trace Sterols in Marine Invertebrates XVII. (24R)-24, 26-Dimethylcholesta-5,26-dien-3-ol, a New Sterol from the Sponge Petrosia Ficiformis.

Steroids, 35, 707 (1980)

By M. W.  Khalil, C. Djerassi and D. Sica.

 

965.    Synthesis and Biochemical Screening of Phenylselenium- Substituted Steroid Hormones.

J. Med. Chem., 23, 722 (1980)

By J. P. Konopelski, C. Djerassi and J. P. Raynaud.

 

966.     The Politics of Contraception - The View from Beijing.

New England J. Med., 303, No.6, 334 (1980)

By C. Djerassi.

 

967.    Injectable Contraceptive Synthesis: An Example of International Cooperation.

Science, 209, 992 (1980)

By P. Crabbe, E. Diczfalusy and C. Djerassi.

 

968.    Applications of Artificial Intelligence for Chemical Inference XXXIII.  Computer-Assisted Elucidation of Molecular Structure with Stereochemistry.

J. Amer. Chem. Soc., 102, 6289 (1980)

By J.G. Nourse, D. H. Smith, R. E. Carhart and C. Djerassi.

 

969.   Applications of Artificial Intelligence for Chemical Inference XXXII.  Rule-based Mass Spectrum Prediction and Ranking: Applications to Structure Elucidation of Novel Marine Sterols.

Org. Mass Spectrom., 15, 355 (1980)

By A. Lavanchy, T. Varkony, D. H. Smith, N. A. B. Gray,

W. C. White, R. E. Carhart, B. G. Buchanan and C. Djerassi.

 

970.     Dinosterol in Model Membranes: Fluorescence Polarization Studies.

Lipids, 15, 694 (1980)

By Z. Harel and C. Djerassi.

 

971.    Proof of Structure by Synthesis of 5,14,17 (H)-cholestane (20R), a Major Petroleum Sterane. Correction of Previous Assignment.

Geochimica et Cosmochimica Acta, 44, 1613 (1980)

 By J. M. Moldowan, W. K. Seifert, M. J. Haley and C. Djerassi.

 

972.    Magnetic Circular Dichroism Studies LVI. Magnetic Circular Dichroism Analysis of the IHP Effect on Spin Equilibria in Human Ferric Hemoglobins.

Biophysical Chemisty, 12, 143 (1980)

By R. E. Linder, R. Records, G. Barth, E. Bunnenberg,

C. Djerassi, B. E. Hedlund, A. Rosenberg, L. Seamans and A. Moscowitz.

 

973    Minor and Trace Sterols in Marine Invertebrates XXI. Isolation and Structure Elucidation of 22(S),23 (S)-Methylenecholesterol.  Evidence for Direct-Bioalkylation of 22-Dehydrocholesterol.

J. Amer. Chem. Soc., 102, 7113 (1980)

By P.-A. Blanc and C. Djerassi.

 

974.     Peridinosterol - A New ∆17-Unsaturated Sterol from Two Cultured Marine Algae.

Tetrahedron Letters, No. 21, 4663 (1980)

By W. Swenson, B. Tagle, J. Clardy,  N. W. Withers,

W.C.H.C. Kokke, W. Fenical and C. Djerassi.

 

975.    Optical Rotatory Dispersion Studies 133. Deuterium Octant Contributions in    Cyclohexanones.

J. Org. Chem., 45, 5231 (1980)

By P. Sundararaman, G. Barth and C. Djerassi.

 

 

976.    Mass Spectrometry in Structural and Stereochemical Problems 256.  The Mass Spectrometric Behavior of 3,5-Cyclo-5-cholestan-6-yl Alkyl Ethers.

            Canad. J. Chem., 58, 2592 (1980) By F. J. Brown, I. J. Massey and C. Djerassi

 

977.    Minor and Trace Sterols in Marine Invertebrates 19.  Isolation, Structure Elucidation and Partial Synthesis of 24-Methylene-25-ethylcholesterol (Mutasterol): First Example of Sterol Side Chain Bioalkylation at Position 25.

J. Am. Chem. Soc., 103, 115 (1981)

By L. N. Li, U. Sjőstrand and C. Djerassi.

 

978.    Optical Rotatory Dispersion Studies 132. Conformational Isotope Effect in Deuterium-Substituted Cyclohexanones.

J. Am. Chem. Soc., 103, 295 (1981)

By S.-F. Lee, G. Barth and C. Djerassi.

 

979.   Stereospecific Transformation of 2,2-Dimethylcyclobutanols into Optically Active 1,2-Cis-Disubstituted Cyclopropanes.

J. Am. Chem. Soc., 103, 302 (1981)

By M. Karpf and C. Djerassi.

 

980.   Sterols with Unusual Nuclear Unsaturation from Three Cultured Marine Dinoflagellates.

Phytochemistry, 20, 127 (1981)

By W. C. M. C. Kokke, W. Fenical and C. Djerassi.

 

981.   Applications of Artificial Intelligence for Chemical Inference XXXIV.  Computer-Assisted Structural Interpretation of Carbon-13 Spectral Data.

J. Org. Chem., 46, 703 (1981)

By N. A. B. Gray, C. W. Crandell, J. G. Nourse, D. H. Smith,

M. L. Dageforde and C. Djerassi.

 

982.    Birth Control in the Year 2001.

Bull. Atomic Scientists, 37, 24 (1981)

By Carl Djerassi.        

 

983.   Minor and Trace Sterols in Marine Invertebrates XVIII. Sterol Synthesis by Cultured Zooxanthellae:  Implications Concerning Sterol Metabolism in the Host-Symbiont Association in Caribbean Gorgonians.

Comp. Biochem. Physiol., 688, 281 (1981)

By W. C. M. C. Kokke, W. Fenical, L. Bohlin and C. Djerassi.

 

984.   Mass Spectrometry in Structural and Stereochemical Problems 257.  Effect of Additional Double Bonds on the Mass Spectrometric Fragmentations of ∆1-3-Keto Steroids.

J. Org. Chem., 46, 955 (1981)

By F. J. Brown and C. Djerassi.

 

985.   Recent Studies in the Marine Sterol Field.

Pure  and Applied Chemistry, 53, 873 (1981)

By Carl Djerassi.

 

986.   Applications of Artificial Intelligence for Chemical Inference XXXIV. Stereochemical Substructure Codes for 13C Spectral Analysis.

Org. Magnetic Resonance, l5, 375 (1981)

By N. A. B. Gray,  J. G. Nourse, C. W. Crandell, D. H. Smith and C. Djerassi.

 

987.    Applications of Artificial Intelligence for Chemical Inference XXXVI.  Computer Assisted Structural Interpretation of Mass Spectral Data.

Helv. Chim. Acta, 64, 458 (1981)

By N. A. B. Gray, A. Buchs, D. H. Smith and C. Djerassi.

 

988.    Applications of Artificial Intelligence for Chemical Inference XXXVII.  GENOA: A Computer Program for Structure Elucidation Utilizing Overlapping and Alternative Substructures.

J. Org. Chem., 46, 1708 (1981)

By R. E. Carhart, D. H. Smith,  N. A. B. Gray, J. G. Nourse and C. Djerassi.

 

989.    Sterols in Marine Invertebrates 22.  Isolation and Structure Elucidation of Conicasterol and Theonellasterol, Two New 4-Methylene Sterols from the Red Sea Sponges Theonella conica and Theonella swinhoei.

J. Org. Chem., 46, 1836 (1981)

By E. Kho, D. K. Imagawa, M. Rohmer, Y. Kashman and C. Djerassi.

990.   Minor and Trace Sterols in Marine Invertebrates 20. 3-Hydroxymethyl-A-nor-Patinosterol and 3-Hydroxymethyl-A-nor-Dinosterol.  Two New Sterols with Modified Nucleus and Side Chain from the Sponge Teichexinella marchella.

J. C. S. Perkin I, 1023 (1981)

By L. Bohlin, U. Sjostrand, C. Djerassi and B. W. Sullivan.

991.    Minor and Trace Sterols in Marine Invertebrates 24.  Isolation of 22-Methylenecholesterol. Further Evidence for Direct Bioalkylation of 22-Dehydrocholesterol.

Tetrahedron Letters, No. 22, 2345 (1981)

By J. Zielinski, H.-T. Li, T. S. Milkova, S. Popov,

N. L. Marekov and C. Djerassi.

 

992.    Optical Rotatory Dispersion Studies 131. Demonstration of a Conformational Isotope          Effect in Deuterium Substituted Cyclopentanones.

Tetrahedron Letters, No. 37, 181 (1981)

By L. Y. Sing, M. Lindley, P. Sundararaman, G. Barth and C. Djerassi.

 

993.    Magnetic Circular Dichroism Studies 59. Substituent-Induced Sign Variation in the  Magnetic Circular Dichroism Spectra of Chlorins.

J. Am. Chem. Soc., 103, 3201 (1981)

By J. D. Keegan, A.M. Sto1zenberg, Y-C. Lu, R. E. Linder, G. Barth, E. Bunnenberg, C. Djerassi and A. Moscowitz.

 

994.    Minor and Trace Sterols in Marine Invertebrates XXIII. Xestospongesterol and Isoxestospongesterol.  First Examples of Quadruple Biomethylation of the Sterol Side Chain.

J. Am. Chem. Soc., 103, 3606 (1981)

By L. N. Li and C. Djerassi.

995.   Optical Rotatory Dispersion Studies 134. Absolute Configuration and Circular Dichroism Spectrum of (R)-[2-2H1]Cyc1opentanone. Demonstration of a Conformational Isotope Effect.

J. Am. Chem. Soc., 103, 5004 (1981)

By P. Sundararaman,  G. Barth and C. Djerassi.

 

996.    Minor and Trace Sterols in Marine Invertebrates 26.  Isolation and Structure Elucidation of Nine New 5,8-Epidioxy Sterols from Four Marine Organisms.

J. Org. Chem., 46, 3860 (1981)

By A. A. Leslie Gunatilaka, Y. Gopichand, F. J. Schmitz and C. Djerassi.

 

997.   Minor and Trace Sterols in Marine Invertebrates 27.  Isolation, Structure Elucidation and Partial Synthesis of 25-Methylxestosterol, a New Sterol Arising from Quadruple Biomethylation in the Side Chain.

J. Org. Chem., 46, 3867 (1981)

By L. N. Li, U. Sjöstrand and C. Djerassi.

 

998.    Phospholipid Studies of Marine Organisms 2. Phospholipids, Phospholipid-Bound Fatty Acids and Free Sterols of the Sponge Aplysina Fistu1aris (Pallas) Forma Fu1va (= Verongia Thiona).  Isolation and Structure Elucidation of Unprecedented Branched Fatty Acids.

Lipids, 16, 631 (1981)

By R. D. Walkup. G. C. Jamieson. M. R. Ratcliff and C. Djerassi.  

 

999.    4-Methyl-24S-ethyl-5-cho1estan-3-o1 and 4-Methyl-24S-ethy15-cho1est-8(14)-en-3-o1, Two New Sterols from a Cultured Marine Dinoflagellate.

Phytochem., 20, 2397 (1981)

By L. Bohlin, W. C. M. C. Kokke, W. Fenica1 and C. Djerassi.

 

1000.  Circular Dichroism of Molecules with Isotopically Engendered Chirality.

Tetrahedron Letters, No. 24, 4123 (1981)

By G. Barth and C. Djerassi.

 

1001.  Minor and Trace Sterols in Marine Invertebrates 28.  A Novel  Po1yhydroxylated Sterol from the Soft Coral Anthelia glauca.

Steroids, 38, 247 (1981)

By U. Sjőstrand, L. Bohlin, L. Fisher, M. Colin and C. Djerassi.

 

1002. Minor and Trace Sterols from Marine Invertebrates 29. (22E)-Ergosta-5,22,25-trien-3β-ol and (22E,24R)-24,26-Dimethylcho1esta-5,22,25(27)-trien-3β-ol. Two New Marine Sterols from the Sponge Pseudaxinella 1unacharta.

Steroids, 38, 355 (1981)

By U. Sjöstrand, J. M. Kornprobst and C. Djerassi.

 

1003. Stereospecific Synthesis of Dinosterol.

Tetrahedron Letters, No. 22, 4627 (1981)

By A. Y. L. Shu and C. Djerassi.

1004. Minor and Trace Sterols in Marine Invertebrates 30. Isolation, Structure Elucidation and Partial Synthesis of 26-Methylstrongylosterol and 28-Methylxestostero1 - Two Marine Sterols Arising by a Novel Quadruple Biomethylation Sequence.

Tetrahedron Letters, No. 22, 4639 (1981)

By L. N. Li and C. Djerassi.

1005.  Synthesis and Absolute Configuration of New Trich1oro Steroids with Cyclopropane-Containing Side Chains.

Helv. Chim. Acta, 64, 2853 (1981)

By R. W. Lang, C. Djerassi. P.D. Strong, D.C. Swenson and W. L. Duax.

1006. Carbon-13 Nuclear Magnetic Resonance Spectra of Monounsaturated Steroids. Evaluation of Rules for Predicting Their Chemical Shifts.

J. Org. Chem., 46, 5399 (1981)

By H. Eggert and C. Djerassi.

 

1006A. Esterois da  Tunccia de Ascidia Nigra (Savigny 1816) (Tunicata--Ascidiasea).

                        An. Acad. Brasil Cienc., 53, 733 (1981)

                        By R. Zelnik, A.K. Matida, C. Djerassi, M.W. Khalil and J.C. De Freitas.

1007. Stereoselective Synthesis of (22R)- and (22S)-22- Methylcholesterol.          

J. Org. Chem., 47, 620 (1982)

By J. Zielinski, H. Li and C. Djerassi.

 

1008. Synthesis of Sterols with Cyclopropane-Containing Side Chains. Spectroscopic Properties and Absolute Configurations.

J. Org. Chem,, 47, 625 (1982)

By R. W. Lang and C. Djerassi.

 

1009. Stereochemical Aspects of Acid-Catalyzed Cyclopropane Ring-Opening Reactions. A Stereospecific Pathway to Crinosterol and Brassicasterol.

Helv. Chim. Acta, 65, 407 (1982)

By R. W. Lang and C. Djerassi.

1010. Applications of Artificial Intelligence for Chemical Inference 40. Computerized Approach to the Verification of Carbon-13 Nuclear Magnetic Resonance Spectral Assignments.

J. Org. Chem., 47, 1027 (1982)

By M. R. Lindley, N.A.B. Gray, D. H. Smith and C. Djerassi.

1011. Minor and Trace Sterols in Marine Invertebrates 25. Novel Dinoflagellate 4-Methylated Sterols from Four Caribbean Gorgonians.

Phytochemistry, 21, 881 (1982)

By W.C.M.C. Kokke, L. Bohlin, W. Fenical and C. Djerassi.

1012. Liquid Chromatography-Mass Spectrometry of Polar Lipids. Comparison of On-Line Method Using Direct Liquid Introduction Interface with Off-Line Method Using Desorption/Chemical Ionization.

J. Chromatog., 251, 189 (1982)

By F. R. Sugnaux and C. Djerassi.

1013. Stereospecific Cyclopropane Ring-Opening of Petrosterol. A Possible Biomimetic Process.

Tetrahedron Letters, No. 23, 2063 (1982)

By R. W. Lang and C. Djerassi.

1014. Sterol Patterns of Cultured Zooxanthellae Isolated From Marine Invertebrates: Synthesis of Gorgosterol and 23-Desmethylgorgosterol by Aposymbiotic Algae.

Proc. Natl. Acad. Sci.,  USA, 79, 3764 (1982)

N. W. Withers, W.C.M.C. Kokke, W. Fenical, and C. Djerassi.

Correction: PNAS, 79, 6390, (1982).

1015. Stereoselective Synthesis via Claisen Rearrangements of the Marine Sterols Occelasterol, Patinosterol and 22,23-Dihydrooccelasterol.

J. Org. Chem., 47, 2420 (1982)

By Y. Hirano and C. Djerassi.

1016. Mass Spectrometry in Structural and Stereochemical Problems 258. Desorption Chemical Ionization Mass Spectrometry of Epimeric 3-Hydroxysteroids and Derivatives. Stereoselectivity and Nucleophilic Substitution with Ammonia.

Org. Mass Spectrom., 17, 277 (1982)

By  P. Tecon, Y. Hirano and C. Djerassi

1017. Magnetic Circular Dichroism Studies 60.  Substituent-Induced Sign Variation in the Magnetic Circular Dichroism Spectra of Reduced Porphyrins. 1. Spectra and Band Assignments.

J. Am. Chem. Soc., 104, 4305 (1982)

By  J. D. Keegan, A. Stolzenberg, V-C. Lu, R. E. Linder,

G. Barth, A. Moscowitz, E. Bunnenberg and C. Djerassi.

1018. Magnetic Circular Dichroism Studies 61. Substituent-Induced Sign Variation in the Magnetic Circular Dichroism Spectra of Reduced Porphyrins 2. Perturbed Molecular Orbital Analysis.

J. Am. Chem. Soc., 104, 4317 (1982)

By  J. D. Keegan, A. M.  Stolzenberg, V-C. Lu, R. E. Linder,

G. Barth, A. Moscowitz, E. Bunnenberg and C. Djerassi.

 

1019. Complete Computer Automation of Preparative Liquid Chromatography through Intelligent Fraction Collection, with Unlimited Injection Volume and Repetitive Collection of Separated Solute Peaks.

J. Chromatog., 248, 373 (1982 )

By F. R. Sugnaux and C. Djerassi.

1020.  Phospholipid Studies of Marine Organisms Ill.  New Phospholipid Fatty Acids from Petrosia Ficiformis.

Lipids, 17, 617 (1982)

By E. Ayanoglu, R. D. Walkup, D. Sica and C. Djerassi.

1021. Synthesis of the Putative Marine Sterols [24R]- and [24S]- 23, 24 Dimethyl 5-cholest-23(29)-en-3-ol.

Tetrahedron Letters, No. 23, 4427 (1982)

By T. Gebreyesus and C. Djerassi.

1022. Applications of Artificial Intelligence for Chemical Inference XLI.  Computer-Assisted Structural Interpretation of  lH-NMR  Spectral Data.

Helv. Chim. Acta, 65, 1898 (1982)

By H. Egli, D. H.  Smith and C. Djerassi.

1023. Structural and Stereochemical Aspects of Base-Catalyzed Double Bond Isomerization of Sterols with Unsaturated Side Chains.

J. Org. Chem., 47, 4298 (1982)

By Hui-ting Li and Carl Djerassi.

1024.  Minor and Trace Sterols in Marine Invertebrates 34.  Isolation and Structure Elucidation of 24-Methyl-5-Cholesta-7,9(11), 24(28)-trien-3-o1, the First Naturally Occurring ∆7,9 (11) Unsaturated Marine Sterol.

Steroids, 39, 675 (1982)

By J. Zielinski, T. Mi1kova, S. Popov, N. Marekov and C. Djerassi

1025.  Minor and Trace Sterols in Marine Invertebrates 31.  Isolation and Structure Elucidation of 23H-Isocalystero1, a Naturally Occurring Cyclopropene.  Some Comparative Observations on the Course of Hydrogenolytic Ring Opening of Steroidal Cyclopropenes and Cyclopropanes.

J. Am. Chem. Soc., 104,  6726 (1982)

By L. N.Li, H. Li , R.  W.  Lang, T. Itoh, D. Sica and C. Djerassi

1026.  Applications of Artificial Intelligence for Chemical Inference XLII.  The DENDRAL Project: Computational Aids to Natural Products Structure Elucidation.

Pure and Appl. Chem., 54, 2425 (1982)

By C. Djerassi, D. H. Smith, C. W. Crandell, N.A.B. Gray,

J. G. Nourse and M. R. Lindley

1027.  Sterols in Marine Invertebrates 32. Isolation of 3(Hydroxymethyl)-A-nor-5-cholest-15-ene, the First Naturally Occurring Sterol with a 15-16 Double Bond.

J. Org. Chem., 47, 5304 (1982)

By M. Eggersdorfer, W.C.M.C. Kokke, C. W. Crandell,

J. E. Hochlowski and C. Djerassi

 

1028.  Sterols in Marine Invertebrates 33.  Structures of Five New 3 - (Hydroxymethyl )-A-nor Steranes:  Indirect Evidence for Transformation of Dietary Precursors in Sponges.

J. Org. Chem., 47, 5309 (1982)

By L. Bohlin, U. Sjöstrand, G. Sodano and C. Djerassi

1029.  Sterols of the Cultured Dinoflagellate Pyrocystis Lunula.

Steroids, 40, 307 (1982)

By W. C.  M.  C.  Kokke, W. Fenical and C. Djerassi

1030.  Sterols of the Cultured Euglenid Eutreptia Viridis:  A Novel ∆23-Unsaturated Sterol.

Steroids, 40, 403 (1982)

By J. Ziellnski, W.C.M.C. Kokke, W. Fenical and C. Djerassi

1031. Minor Sterols of  Marine Invertebrates 37.  Isolation of Novel Coprostanols and 4-Methyl Sterols from the Tunicate Ascidia Nigra

Steroids, 40, 433 (1982)

By T.B. Tam-Ha, W. C. M. C. Kokke and C. Djerassi

1032. Minor and Trace Sterols in Marine Invertebrates 39.  24  25,-24, 26-Cyclocholest-5-en-3-ol, a Novel Cyclopropyl Sterol.

Steroids, 40, 455 (1982)

By C.A.N. Atalan, V. Lakshmi,  F. J . Schmitz and C. Djerassi 

1033. Minor and Trace Sterols in Marine Invertebrates 38.  Isolation. Structure Elucidation and Partial Synthesis of Papakusterol.  a New Biosynthetically Unusual Marine Sterol with a Cyclopropyl-Containing Side Chain.

                        Tetrahedron Letters, No. 24,  277 (1983)

By C. Bonini, R. B. Rinnel.  M. Li., P. J. Scheuer and C. Djerassi

1034. Synthesis of (23R)- and (23S)-Methylcholesterol.

J. Org. Chem., 48, 48 (1983)

By H. Li, I. J.  Massey, D. C. Swenson. W. l. Duax and C. Djerassi

1035. Minor and Trace Sterols in Marine Invertebrates 40.  Structure and Synthesis of Axinyssasterol,  25-Methylfucosterol and 24-Ethyl-24-methylcholesterol--Novel Sponge Sterols with Highly Branched Side Chains.

Tetrahedron Letters, No. 24, 665 (1983)

 By X. Li and C. Djerassi

 

1036. Minor and Trace Sterols in Marine Invertebrates 35.  Isolation and Structure Elucidation of Seventy-four Sterols from the Sponge Axinella Cannabina.

J. Chem. Soc.  Perkin Trans. I, 147 (1983)

 By T. Itoh. D. Sica and C. Djerassi

 

1037. Mass Spectrometry in Structural and Stereochemical Problems. Translational Energy Release and Stereochemistry of Steroids.

Int. J. Mass Spectrom. Ion. Phys.,  47. 137 (1983)

By Z. V. I. Zaretskii, E. A. Larka, C. G. Herbert,

J. H. Beynon. C. Djerassi, P. Dan and Z. Kustanovich

1038.  Phospholipid Studies of  Marine Organisms IV.  (2, 21Z) -2-Methoxy-21- octacosenoic Acid, the First Naturally Occurring -Methoxy Acid from a Phospholipid.

Tetrahedron Letters, No. 24, 1111 (1983)

By E.  Ayanoglu. J. M. Kornprobst, A. Aboud-Bichara and C. Djerassi

1039.  (24S)-24H-Isocalysterol: A New Steroidal Cyclopropene from the Marine Sponge Calyx Niceaensis.

J. Org. Chem., 48. 890 (1983)

By T. Itoh, D.Sica and C. Djerassi

1040.  Optical Rotatory Dispersion Studies 135.  Synthesis and Chiroptical Properties of (S)- and (R)-(3-2Hi)-2, 2- Dimethylcyclobutanone.  Evidence for Conformational Effects in Substituted Cyclobutanones.

            J. Am. Chem. Soc., 105, 2408  (1983)          .

By R. N. Harris III, P. Sundararaman and C. Djerassi

1041.  Magnetic Circular Dichroism Studies 62.  Sign Variation in the Magnetic Circular Dichroism Spectra of Some Perimeter Symmetric Free-base Porphyrins.

Spectrosc. Lett., 16, 275 (1983)

By J. D. Keegan, E. Bunnenberg and C. Djerassi

1042.  Magnetic Circular Dichroism Studies 64.  Novel Magnetic Circular Dichroism Spectra of Monoacetyl Porphyrins.  Structure Implications.

Tetrahedron Letters, No. 24, 2433 (1983)

By Y. Lu., A. Y. L Shu,  A. Knierzinger,  P. S. Clezy.

E. Bunnenberg and C. Djerassi

1043. Minor and Trace Sterols in Marine Invertebrates 41.  Structure and Stereochemistry of Naturally Occurring 9.11-Seco Sterols.

J. Org. Chem., 48, 2108 (1983)

By C. Bonini, C. B. Cooper, R. Kazlauskas,

R. J. Wells and C. Djerassi

1044. Acid-Catalyzed and Photochemical Isomerization of Steroidal Cyclopropenes.

J. Am. Chem. Soc., 105, 4407 (1983)

By T. Itoh and C. Djerassi

1045. Chemical Proof of Absolute Configuration of 24,26-Cyclocholesterol by Biomimetic Conversion to 27-Norergostenes.

Tetrahedron Letters, No. 24. 3461 (1983)

By C. A. N. Catalan and C. Djerassi

1046.  “Progestins in Therapy-- Historical Developments.”  Chapter 1 in Progestogens in Therapy (G. Benagiano, P. Zulli and E. Diczfalusy, eds.) Raven Press, New York, 1983, pp. 1-12.

1047.  Minor and Trace Sterols in Marine Invertebrates. 42.  Isolation, Partial Synthesis and Structure Determination of Sterols with the Four Possible 23.24-Dimethyl-Substituted Side Chains.

J. Org. Chem., 48, 3471 (1983)

By J. Zielinski, W. C. M. C. Kokke,  T. B. T. Ha,

A. Y. l. Shu, W. L. Duax and C. Djerassi

 

1048.  Application of the Computer Program GENOA and Two-Dimensional NMR Spectroscopy to Structure Elucidation.

Org. Magn. Reson., 21, 405 (1983)

By M. R. Lindley,  J. N. Shoolery,

D. H. Smith and C. Djerassi

1049.  Phospholipid Studies of Marine Organisms V. New -Methoxy Acids from Higginsia    Tethyoides.

Lipids, 18,  830 (1983)

By E. Ayanoglu. S. Popov. J. M. Kornprobst.,

A. Aboud-Bichara and C. Djerassi

1050.  Minor and Trace Sterols in Marine Invertebrates 43.  Occurrence and Seasonal Variation of 19-Norcholest-4-en-3-one and 3-Monohydroxy Sterols in the Californian Gorgonian. Muricea Californica.

Steroids. 41, 537 (1983)        

By S. Popov, R. M. K. Carlson and C. Djerassi

 

1051. "Paul Klee at Bard."  (poem)  In The Graphic Legacy of Paul Klee,  Edith C. Blum Art Institute,  The Bard College Center. Annandale-on-Hudson, New York. 1983, pp. 10-11.  By Carl Djerassi

1052.  Sterols of Marine Invertebrates 44.  Isolation, Structure Elucidation,  Partial Synthesis and Determination of Absolute Configuration of Pulchrasterol.  The First Example of Double Bioalkylation of the Sterol Side Chain at Position 26.

J. Org. Chem., 48, 4472 (1983)

By B. V. Crist, X. Li. P. R. Bergquist and C. Djerassi

 

1053.  Optical Rotatory Dispersion Studies 136.  Enzymatic Reduction of 2-Methyl-2- (trideuteriomethyl) cyclohexane-l, 3-dione.  Unusual Conformation of 2,2.-Dimethyl-3-hydroxycyclohexanone.

J. Org. Chem.,  48, 4549 (1983)

By Y. Lu. G. Barth,  K. Kieslich. P. D. Strong,

 W. L. Duax and C. Djerassi

1054.  Mass Spectrometry in Structural and Stereochemical Problems 262.   Double-Bond Location in Long-Chain Polyunsaturated Fatty Acids by Chemical Ionization Mass Spectrometry.

Lipids, 18, 853 (1983)

By J. Lankelma,  E. Ayanoglu and C. Djerassi

1055. Minor and Trace Sterols in Marine Invertebrates 45.  Identification of Sterols with Oxygenated Side Chains in a Sponge of the Species Hytios.

Helv. Chim. Acta, 66, 2431 (1983)

By P. Koch, C. Djerassl, V. Lakshmi and F. Schmitz

1056.  Long-Acting Contraceptive Agents: Design of the WHO Chemical Synthesis Programme.

Steroids, 41, 243 (1983)

By P. Crabbé, S. Archer, G. Benagiano, E. Diczfalusy,

C. Djerassi,  J. Fried and T. Higuchi

1057.  Synthesis of (24R) - and (24S)-5,28-Stigmastadien-3-ol and Determination of the Stereochemistry of their 24-Hydroxy Analogues,  the Saringosterols.

J. Org. Chem., 48, 5207 (1983)

By C. A. N. Catalan, W. C. H. C. Kokke,

C. Duque and C. Djerassi      

 

1058.  “Future Methods of Fertility Regulation in Developing Countries: How to make the Impossible Possible by December 31, 1999.”

 In Research on the Regulation of Human Fertility  (E. Diczfalusy and A. Diczfalusy, eds.),  Scriptor, Copenhagen 1983, pp. 235-249.

By Carl Djerassi.

1059.  Minor and Trace Sterols in Marine Invertebrates 46.  Marine 4-Methyl Sterols: Synthesis of C-24 Epimers of 4, 24-Dimethyl-5-cho1estan-3-ol and 360 MHz IHNMR Comparisons to the Natural Product from Plexaura Homomalla.

Steroids., 42, 217 (1983)

By W. C. Dow,  T. Gebreyesus, S. Popov, 

R. M. K. Carlson and C. Djerassi

1060. Minor and Trace Sterols in Marine Invertebrates 47.  A Re-Investigation of the 19-Nor Stanols Isolated from the Sponge Axinella Polypoides.

Steroids, 43, 331 (1983)

By B. V. Crist and C. Djerassi

1061.  Magnetic Circular Dichroism Studies 63.  Sign Variation in the Magnetic Circular Dichroism Spectra of Some Perimeter Symmetric Metallo Porphyrins.

Spectrochim. Acta, 40A, 287 (1984)

By J. D. Keegan, E. Bunnenberg and C. Djerassi

1062.  Synthesis and Stereochemical Assignment of (22R,24S)-, (22R,24R)-, (22S,24R)-, and (22S,24S)-22,24-Dimethylcholesterol.

J. Org. Chem., 49, 987 (1984)

By T. Gebreyesus and C. Djerassi

 

1063.   Optical Rotatory Dispersion Studies 137. Synthesis and Chiroptical Properties of - and -Deuterium Substituted Aliphatic Aldehydes and Ketones.

J. Org. Chem., 49, 1511 (1984)

by L. A. Gorthey, M. Vairamani and C. Djerassi

 

1064.   "Marine Sterols." In Proceedings of the Alfred Benzon Symposium 20 (P. Krogsgaard-Larsen, S. Brogger Christensen and Helmer Kofod, eds.)

            Munksgaard, Copenhagen 1984, pp. 164-176

            by Carl Djerassi.

 

1065.   Formylation of Pyrrole Derivatives.

Synth. Commun, 14, 383 (1984)

by A. G. H. Wee, E. Bunnenberg and C. Djerassi

 

 

1066.   On the Origin of Terpenes in Symbiotic Associations between Marine Invertebrates and Algae (Zooxanthellae).

J. Biol. Chem., 259, 8168 (1984)

by W. C. M. C. Kille, S. Epstein, S. A. Look, G. H. Rau, W. Fenical and C. Djerassi

 

1067.   Magnetic Circular Dichroism Studies 65. Sign Variation in the Magnetic Circular Dichroism Spectra of Free-Base Porphyrins Having a Single -h-Acceptor Pyrrole Ring Substituent. Structure Implications.

J. Am. Chem. Soc., 106, 4241 (1984)

by C. Djerassi, Y. Lu, A. Waleh, A. Y. L. Shu, R. A. Goldbeck, L. A. Kehres, C. W. Crandell, A. G. H. Wee, A. Knierzinger, R. Gaete-Holmes, G. Loew, P. S. Clezy and E. Bunnenberg

 

1068.   Phospholipid Studies of Marine Organisms 9. New Brominated Demospongic Acids from the Phospholipdis of Two Petrosia Species.

Tetrahedron Letters, No. 25, 3285 (1984)

by W. M. D. Wijekoon.  E. Ayanoglu and C. Djerassi

 

1069.   Translational Energy Release and Stereochemistry of Steroids 4. Epimeric 3-Keto and 3-Hydroxy Steroids.

Org. Mass Spectrom., 19, 321 (1984)

by Z. V. I. Zaretskii, P. Dan, Z. Kustanovich, E. A. Larka, C. G. Herbert, J. Beynon and C. Djerassi

 

1070.   Book Review: "The Pharmaceutical Industry and Dependency in the Third World," by Gary Gereffi.

Nature, 310, 517 (1984)

by Carl Djerassi

1071.   Mass Spectrometry in Structural and Stereochemical Problems 763; Phospholipids in Marine Organisms 6. Mass Spectrometry of Phospholipids. Some Applications of Desorption Chemical Ionization ana Fast Atom Bombardment.

J. Am. Chem. Soc., l06, 5246 (1984)

by E. Ayanoglu, A. Wegmann. O. Pilet, G. D. Marbury. J. R. Hass and C. Djerassi

 

1072.   Phospholipid Studies of Marine Organisms 7. Stereospecific Synthesis of (5Z,9Z)-, (5Z.9E)-, (5E.9Z)-, and (5E,9E)-5,9-Hexacosadienoic Acid.

J. Org. Chem., 49, 3260 (1984) 

by P. L. Mena, O. Pilet and C. Djerassi

1073.   Magnetic Circular Dichroism Studies 66. Synthesis of Demethyl Monosubstituted Porphyrins. The Effect of Substituent Conformation on the Magnetic Circular Dichroism Spectra of Ethoxycarbonyl Porphyrins.

J. Org. Chem.,  3 49, (1984)

by A. G. H. Wee. A. Y. L. Shu, E. Bunnenberg and C. Djerassi

 

1074.   Mass Spectrometry in Structural and Stereochemical Problems 264. Enhanced Structure Determination of Beta-Pyrrole and N-Substituted Porphyrins by Desorption Chemical Ionization Mass Spectrometry.

Tetrahedron Letters, No. 25, 4083 (1984)

by X-Yo Jiang, A. W. Szente. B-R. Tolf. L. A. Kehres, E. Bunnenberg and C. Djerassi

 

1075.   Stereochemical Effects in Cyclopropane Ring Openings: Biomimetic Ring Openings of all Isomers of 22.23-Methylenecholesterol Acetate.

J. Am. Chem. Soc., 106, 5602 (1984) 

by M. P. Zimmerman, Li, W. L. Duax, C. M. Weeks and C. Djerassi

 

1076.   Stereochemical Effects in Cyclopropane Ring Openings: Synthesis and Isomerization of Petrosterol and all Three of its Trans Cyclopropane Diastereomers.

J. Am. Chem. Soc., 106, 5613 (1984)

by J. R. Proudfoot and C. Djerassi

 

1077.   The Making of the Pill.

Science 84. 5, 127 (1984)

by Carl Djerassi

 

1078.   Biosynthetic Studies of Marine Lipids 4. Mechanism of Side Chain Alkylation in (E)-24-Propylidenecholesterol by a Chrysophyte Alga.

J. Org. Chem., , 49, 3742 (1984)

by W. C. M. C. Kokke, J. N. Shoolery, W. Fenical and C. Djerassi

 

1079.   Phospholipid Studies of Marine Organisms 8: New Branched Fatty Acids from Strongylophora Durissima.

Lipids, 19, 768 (1984)

by A. Dasgupta, E. Ayanoglu and C. Djerassi

 

1080.   Mass Spectrometry in Structural and Stereochemical Problems 260. Ion-Molecule Reaction in the Gas Phase 4. Stereospecific Nucleophilic Substitution under Ammonia Chemical Ionization Conditions from Diastereomeric Methyl and Benzyl Ethers of 3-Hydroxy Steroids.

Org. Mass Spectrom., 19, 473 (1984)

by J-C. Tabet, Y. Tondeur, Y. Hirano, A. Wegmann, P. Tecon and C. Djerassi

 

1081.   Mass Spectrometry in Structural and Stereochemical Problems 261. The Effect of Stereochemistry on the Course of the Characteristic Ring of Fragmentation of Steroid Hydrocarbons.

Org. Mass Spectrom, 19, 531 (1984)

by D. G. Patterson, M. J. Haley, I. Midgley and C. Djerassi

 

1082.   Minor and Trace Sterols in Marine Invertebrates 48. The Isolation, Structure Elucidation and Synthesis of 23(R),24(R)-Methylenecholesterol.

Tetrahedron Letters, No. 25, 5493 (1984)

by J. R. Proudfoot and C. Djerassi

 

1083.   A Steroid Autobiography.

Steroids, 43, 351 (1984)

by Carl Djelrassi

 

1084.   "The Chemical History of the Pil1." In Discoveries

                        in Pharmacology, 2 (H. J. Parnham and J. Bruinvels, eds.)

                        Elsevier Science Publishers, 1984, pp. 339-361

                        by Carl Djerassi.

 

1085.   Synthesis of the Four Stereoisomers of 22, 23- Dimethylcholesterol.

J. Org. Chem., 50, 154 (1985)

by T. Gebreyesus and C. Djerassi

 

1086.   New Natural 2-Acetoxy Fatty Acids Using Chemical Ionization and Electron Impact Mass Spectrometry.

Lipids, 20, 141 (1985)

by E. Ayanoglu, K. Kurtz, J.M. Kornprobst and C. Djerassi

 

1087.   Biosynthetic Studies of Marine Lipids 3. Experimental Demonstration of the Course of Side Chain Extension in Marine Sterols.

Tetrahedron Letters, No. 41, 1073 (1985)

by C.A.N. Catalan, J.E. Thompson, W.C.M.C. Kokke and C. Djerassi

 

1088.   Sterols in Marine Invertebrates 49.  Isolation and Structure Elucidation of Eight New Polyhydroxylated Sterols from the Soft Coral Sinularia Dissecta.

J. Org. Chem.., 50, 1435 (1985)

by B.M. Jagodzinska, J.A. Trimmer, W. Fenical and C. Djerassi

 

1089.   Minor and Trace Sterols from Marine Invertebrates 50. Stereostructure and Synthesis of Nicasterol, a Novel Cyclopropane-Containing Sponge Sterol.

J. Org. Chem., 50, 2026 (1985)

by J.R. Proudfoot, X. Li and C. Djerassi

 

1090.   Mass Spectrometry in Structural and Stereochemical Problems 267. Translational Energy Release and Stereochemistry of Steroids 6. Contribution of the 18- and 19-Methyl Groups to the Translational Energy Release for the Angular Methyl Loss in Unsaturated Steroids.

Org. Mass Spectrom., 20, 471 (1985)

by Z.V.I. Zaretskii, Z. Kustanovich, E.E. Kingston, J.H. Beynon, R. Lauber, U.P. Schlunegger and C. Djerassi

 

1091.   Sterols in Marine Invertebrates 51. Isolation and Structure Elucidation of C-18 Functionalized Sterols from the Soft Coral Sinularia Dissecta.

J. Org. Chem., 50, 2988 (1985)

by B.M. Jagodzinska, J.S. Trimmer, W. Fenical and C. Djerassi

1092.   Phospholipid Studies of Marine Organisms 11. Synthesis of 5,9-Hexacosadienoic Acid Phospholipids.

Chemistry and Physics of Lipids, 37, 257 (1985)

by P.L. Mena and C. Djerassi

1093.   Minor and Trace Sterols in Marine Invertebrates 52. Isolation, Structure Elucidation and Partial Synthesis of 24-Propyl-24,28-methylenecholest-5-en-3-ol.

Tetrahedron Letters, No. 26, 4031 (1985)

by T.B. Tam Ha and C. Dierassi

 

1094.   Searching for Ideal Contraceptives.

Society, 23, 41 (1985)

by Carl Djerassi

 

 

1095.   Optical Rotatory Dispersion Studies 138. Synthesis and Conformational Analysis of Heteroatom-Substituted Cyclohexanones.

J. Org. Chem., 50, 4173 (1985)

by L. Gorthey, M. Vairamani and C. Djerassi

 

1096.   Minor and Trace Sterols in Marine Invertebrates 53. Further Novel Marine Sterols Resulting from Triple and Quadruple Biomethylation of the Cholesterol Side Chain.

Steroids, 45, 263 (1985)

by T.B. Tam Ha, W.C.M.C. Kokke, J.R. Proudfoot, C. Djerassi and J.E. Thompson

 

1097.   Minor and Trace Sterols in Marine Invertebrates 55. The Isolation, Structure Elucidation and Synthesis of Ergosta-5,24(28),25-trien-3-ol.

Steroids, 45, 447 (1985)

by T. Gebreyesus, 1. Stoilov, F-T. Luo and C. Djerassi

 

1098.   Biosynthetic Studies of Marine Lipids 6. Evidence for an Unprecedented Biomethylation Pathway in the Biosynthesis of the Cyclopropyl-Containing Marine Sterol, Petrosterol.

Tetrahedron Letters, No. 27, 423 (1986)

by J.R. Proudfoot, C.A.N. Catalan, C. Djerassi, D. Sica and G. Sodano

 

1099.   Mass Spectrometry in Structural and Stereochemical Problems 268. Translational Energy Release and Stereochemistry of Steroids 7. The Loss of Angular Methyl Groups after the Dehydration of Molecular Ions of Cholesterol and Related C(5)-unsaturated 3-Hydroxy Steroids.

Org. Mass Spectrom., 21, 125 (1986)

by Z.V.I. Zaretskii, Z. Kustanovich, E.E. Kingston, J.H. Beynon, C. Djerassi and L. Tökes

1100.   Abortion in the United States: Politics or Policy?

Bulletin of the Atomic Scientists, 42, 38 (1986)

by Carl Djerassi

 

1101.   Mass Spectrometry in Structural and Stereochemical Problems 266. Enhanced Structural Determination of Substituted Porphyrins by Ammonia Desorption Chemical Ionization Mass Spectrometry.

J. Am. Chem. Soc., 108, 1363 (1986)

by B-R. Tolf, X-Y Jiang, A. Wegmann-Szente, L.A. Kehres, E. Bunnenberg and C. Djerassi

1102.   Application of Selenosulfonation to Marine Sterol Synthesis. Preparation of 24, 28-Dehydroaplysterol, Xestosterol and Ostreasterol from a Common Acetylenic Intermediate.

Tetrahedron Letters, No. 27, 2187 (1986)

by T.G. Back, J.R. Proudfoot and C. Djerassi

 

1103.   Evidence of Tautomerism in a Triply 15N Labeled Monoacetyl porphyrin in NMR: Kinetic HH/HD Isotope Effects and Thermodynamics in CD2Cl2 .

J. Am. Chem. Soc., 108, 3856 (1986)

by M. Schlabach, B. Wehrle, H-H. Limbach, E. Bunnenberg, A. Knierzinger, A.Y.L. Shu, B-R. Tolf and C. Djerassi

 

1104.   Biosynthetic Studies of Marine Lipids 5. The Biosynthesis of Long-Chain Branched Fatty Acids in Marine sponges.

J. Org. Chem., 51, 2751 (1986)

by N. Carballeira, J.E. Thompson, E. Ayanoglu and C. Djerassi

1105.   Biosynthetic Studies of Marine Lipids 7. Experimental Demonstration of a Double Alkylation at C-28 in the Biosynthesis of 24-Isopropylcholesterols in a sponge.

Tetrahedron Letters, No. 42, 4147 (1986)

by I.L. Stoilov, J.E. Thompson and C. Djerassi

 

1106.   Biosynthetic Studies of Marine Lipids 8. Course of the Stereoselective Alkylation and Regioselective Hydrogen Migration in the Biosynthesis of the Sponge Sterol (24S)24-Isopropenylcholesterol.

Tetrahedron Letters, No. 42, 4156 (1986)

by I.L. Stoilov, T.G. Back, J.E. Thompson and C. Djerassi

 

1107.   What Contraceptive Revolution?

Family Planning Perspectives, 18, 100 (1986)

by Carl Djerassi

 

1108.   Biosynthetic Studies of Marine Lipids 10. Double Side Chain Extension in the Triply Alkylated sponge Sterol Xestosterol.

Tetrahedron Letters, No. 27, 4821 (1986)

by I.L. Stoilov, J.E. Thompson and C. Djerassi

 

1109.   Magnetic Circular Dichroism Studies 67. Substituent Induced Sign Variation in the Magnetic Circular Dichroism of Free-Base Porphyrins with a single Electron-withdrawing Substituent. The Question of N-H Proton Equilibrium.

J. Am. Chem. Soc., 108, 6449 (1986)

by R.A. Goldbeck, B-R. Tolf, A.G.H. Wee, A.Y.L. Shu, R. Records, E. Bunnenberg and C. Djerassi

 

1110.   Minor and Trace Sterols from Marine Invertebrates 56. Novel Coprostanols from the Marine Sponge Petrosia Ficiformis.

Steroids, 47, 49 (1986)

by S.B. Seidel, J.R. Proudfoot, C. Djerassi, D. Sica and G. Sodano

 

1111.   Phospholipid Studies of Marine organisms 13. Biophysical Properties of Unusual   Phospholipids and Sterols from Marine Invertebrates.

Biochim. Biophys. Acta, 863, 110 (1986)

by E. Ayanoglu, N. Duzgunes, W.M.D. Wijekoon and C. Djerassi

 

1112. Biosynthetic Studies of Marine Lipids 9. Stereochemical Aspects and Hydrogen Migrations in the Biosynthesis of the Triply Alkylated Side Chain of the Sponge Sterol Strongylosterol.

J. Am. Chem. Soc., 108, 8235 (1986)

by I.L. Stoilov, J.E. Thompson, J-H. Cho and C. Djerassi

 

 

1113. Minor and Trace Sterols in Marine Invertebrates 54. The Crystal Structure of 3-     Hydroxy-4,23R,24R-trimethyl-5 cholestane (23R,24R-from Dinoflagellates.

Steroids, 47, 321 (1986)

by G.R. Pettit, D.L. Herald, W.C.M.C. Kokke and C. Djerassi

 

1114. Phospholipid Studies in Marine Organisms 12. Mass Spectral Behavior and HPLC of Some Unusual Molecular Phospholipid Species.

Chem. and Phys. of Lipids, 41, 335 (1986)

by A. Dasgupta, E. Ayanoglu, A. Wegmann-Szente, K. Tomer and C. Djerassi

 

1115.Magnetic Circular Dichroism Studies 68.  Substituent Conformational Effects in the Magnetic Circular Dichroism and Absorption Spectra of Free-Base Carbonyl Porphyrins

                        J. Am. Chem. Soc., 109, 28 (1987)

                        by R. A. Goldbeck, B-R. Tolf, E. Bunnenberg and C. Djerassi

 

1116. Engines of Innovation: The Interface of Academia and Industry (In  Japanese)

                     Economics Today, 5, 75 (Spring 1987)

                     by Carl Djerassi

 

1117. Contraccezione—Venta’nni Dopo: Com’è natta la pillola [Contraception—Twenty Years Later: How the Pill Was Created] (In Italian and English)

                     Atti della Società Italiana di Fertilità e Sterilità (XIII Congresso

                     Nazionale, Maggio 1986)

                     by C. Djerassi

 

1118. Biosynthetic Studies of Marine Lipids 12.  Biosynthesis in Marine Sponges of Sterols Possessing the D 5,7-Nucleus Typical of Fungi and the 24-Alkyl Side Chain Characteristic of Plants.

                     Tetrahedron Letters, No. 43, 2213 (1987)

                      by I.L. Stoilov, M. Bladocha- Moreau, J.E. Thompson and  C. Djerassi

 

1119. Phospholipid Studies of Marine Organisms 15.  Ether Lipids of the Sponge Tethya Aurantia.

                                 Lipids, 22, 236 (1987)

                                 by G.M. Smith and C. Djerassi

 

1120. Phospholipid Sudies of Marine Organisms 15.  High Performance Liquid Chromatography and Fast Atom Bombardment Mass Spectrometry of Unusual Branched and Unsaturated Phospholipid Molecular Species

                                 Chemistry and Physics of Lipids, 43, 101 (1987)

                                 by A. Dasgupta, E. Ayanoglu, K.B. Tomer and C. Djerassi

 

1121. Biosynthetic Studies of Marine Lipids 11.  Synthesis, Biosynthesis, and Absolute Configuration of the Internally Branched Demospongic Acid, 22-Methyl-5,9-octacosadienoic Acid

                                 J. Org. Chem., 52, 2337 (1987)

                                 by D. Raederstorff, A. Y. L. Shu, J. E. Thompson and C. Djerassi

 

 

 

1122. Synthesis and Stereochemistry of 23,24-Dihydrocalysterol: Implications for Marine Sterols of a Unified Biosynthetic Scheme Involving Protonated Cyclopropanes

                                 J. Chem. Soc. Perkin Trans., 1, 1283 (1987)

                                 by J. R. Proudfoot and C. Djerassi

 

1123. Synthesis and Stereochemistry of Ficisterol and Norficisterol: Biosynthetic      .         Implications

                                 J. Chem. Soc. Perkin Trans., 1, 1291 (1987)

                                 by A. Y. L. Shu and C. Djerassi

 

1124. Sterols in Marine Invertebrates. Part 57.  Stereostructure, Synthesis, and Acid-catalysed Isomerization of Hebesterol—A Biosynthetically Significant Cyclopropyl-containing Marine Sterol

                                 J. Chem. Soc. Perkin Trans., 1, 1307 (1987)

                                 by J.H. Cho and C. Djerassi

 

1125 The Politics of Contraception: The View from Tokyo

                                 Technology in Society, 9, 157 (1987)

                                 By Carl Djerassi

 

1126. Contraception in the Year 2001

In Contraception in the Year 2001: Proceedings of an Excerpta Medica      Foundation Symposium Held at the Royal Netherlands

                                 Academy of Sciences and Letters, Amsterdam, 2–3 October 1986,

                                 P. A. van Keep, K. E. Davis and D. de Wied, eds. New York:

                                 Elsevier Science Publishers B.V., 1987, pp. 205–222.

                                 by Carl Djerassi

 

1127. Minor and Trace Sterols from Marine Invertebrates 58. Stereostructure and                      Synthesis of New Sponge Sterols Jaspisterol and Isojaspisterol

                                 J. Org. Chem., 52, 4517 (1987)

                                 by J.H. Cho and C. Djerassi

 

1128. Biosynthesis of Three Cyclopropene-containing Sterols in the Sponge Calyx niceaensis

                                    J. Chem. Soc., Chem. Commun., No. 19, 1441 (1987)

by  C. Margot, C. A. N. Catalan, J. R.  Proudfoot, G. Sodano, D. Sica , and

C. Djerassi

 

1129. Steroid Ovulation Inhibitors (in English)

                                 Wiener Medizinische Wochenschrift, 137, 492 (1987)

                                 by Carl Djerassi         

 

1130. “My Mom, the Professor” (letter)

                                 Science, 239, 10 (1998)

                                 by Carl Djerassi

 

1131.   Biosynthetic Studies of Marine Lipids 15.  Conversion of Parkeol

           (Lanosta-9(11),24-dien-3ol) to -Methylcholest(11)-en--ol in the

           Sea Cucumber Holothuria arenicola

                                 Tetrahedron Letters, No. 29, 2159 (1988)

                                 by M. L. Cordeiro, R. G. Kerr and C. Djerassi

 

1132. Translational Energy Release and Stereochemistry of Steroids VIII.  The Mechanism of the Elimination of Water from Metastable Ions in Epimeric 3-Hydroxy  Steroids of the Series

            Org. Mass Spectrom., 23, 453 (1988)

            by Z. V. I. Zaretskii, J. M. Curtis, A. G. Brenton, J. H. Beynon and

            C. Djerassi

 

1133. Translational Energy Release and Stereochemistry of Steroids IX.  The Mechanism of the Elimination of Water from Metastable Ions in Epimeric 3-Hydroxyl Steroids of the series

            Org. Mass Spectrom., 23, 460 (1988)

            by Z. V. I. Zaretskii, J. M. Curtis, A. G. Brenton, J. H. Beynon and

            C. Djerassi

 

1134. Biosynthetic Studies of Marine Lipids 14.  24(28)-Dehydroaplysterol and

         other Sponge Sterols from Jaspis stellifera

            J. Org. Chem., 53, 3466 (1988)

            by J.H. Cho, J. E. Thompson, I. L. Stoilov and C. Djerassi

 

1135. Unusual Sponge Phospholipids and their Analogs.  Synthesis and Interactions with Conventional Phospholipids and Cholesterol in Model Membranes

                                 Chemistry and Physics of Lipids, 47, 165 (1988)

                                 by E. Ayanoglu, H. Li, C. Djerassi and N. Düzgünes

 

1136. Biosynthetic Studies of Marine Lipids 18.  Biosynthesis of 3β-(Hydroxymethyl)-A-nor-5α-cholest-15-ene in the Marine Sponge Phakellia Aruensis

                                 Tetrahedron Letters, No. 29, 4081 (1988)

                                 by S. Malik, I. L. Stoilov and C. Djerassi

 

    1137. Cell Membrane Localization of Long Chain C24-C30 Acids in Two  Marine

              Demosponges

                                 Lipids, 23, 741 (1988)

                                 by M. P. Lawson, J. E. Thompson and C. Djerassi

 

1138. Cell Membrane Localization of Sterols with Conventional and Unusual

           Side Chains in Two Marine Demosponges

                                 Lipids, 23, 750 (1988)

                                 by M. P. Lawson, I. L. Stoilov, J. E. Thompson and C. Djerassi

 

1139. Biosynthesis of Marine Lipids 19.  Dealkylation of the Sterol Side Chain in

          Sponges

                                 J. Am. Chem. Soc., 110, 6895 (1988)

                                 by S. Malik, R. G. Kerr and C. Djerassi

 

1140. Analogs of Unusual Sponge Phospholipids.  Synthesis and Thermotropic

          Properties of 1,2-di-(6Z,9Z)-6,9-Hexacosadienoyl Phosphatidlycholine

          and Phosphatidylethanolamine

                                 Chemistry and Physics of Lipids, 48, 109 (1988)

                                 by H. Li, N.  N. Düzgünes, E. Ayanoglu and C. Djerassi

 

1141. Biosynthetic Studies of Marine Lipids 17.  The Course of Chain

         Elongation and Desaturation in Long-Chain Fatty Acids of Marine

         Sponges

                                 J. Am. Chem. Soc., 110, 8117 (1988)

                                 by S. Hahn, I. L. Stoilov, T. B. T. Ha, D. Raederstorff,

                                 G. A. Doss, H.T. Li and C. Djerassi

 

1142. Sterols in Marine Invertebrates 60.  Isolation and Structure Elucidation

          Of Four New Steroidal Cyclopropenes from the Sponge Calyx podatypa

                                 J. Am. Chem. Soc., 110, 8124 (1988)

                                 by G. A. Doss and C. Djerassi

 

1143. Localization of Long-Chain Fatty Acids and Unconventional Sterols in

          Spherulous Cells of a Marine Sponge

                                 Lipids, 23, 1037 (1988)

                                 by M. P. Lawson, J. E. Thompson and C. Djerassi

 

1144. Synthesis of (24R,28R)- and (24S,28S)-24,28-Methylene-5-stigmasten-

           3β- ol and Biosynthetic Implications of Cyclopropyl Cleavage to

           24-Substituted Cholesterols

                                 J. Org. Chem., 53, 5895 (1988)

                                 by J.L. Giner, M. P. Zimmerman and C. Djerassi

 

1145. Biosynthetic Studies of Marine Lipids 21.  Experimental Demonstration of a       Biosynthetic Interconversion of Cyclopropene Sterols in the Sponge

           Calyx nicaeensis

                                 Tetrahedron Letters, No. 29, 6051 (1988)

                                 by G. A. Doss, C. Margot, G. Sodano and C. Djerassi

 

1146. Fatty Acids as Biological Markers for Bacterial Symbionts in Sponges

                                 Lipids, 23, 1139 (1988)

            by F. T. Gillan, I. L. Stoilov, J. E. Thompson, R. W. Hogg,

            C. R. Wilkinson and C. Djerassi

 

1147. Stereospecificity and Regiospecificity of the Phosphorus Oxychloride

             Dehydration of Sterol Side Chain Alcohols

                                 J. Org. Chem., 54, 369 (1989)

                                 by J.L. Giner, C. Margot and C. Djerassi

 

1148. Biosynthetic Studies of Marine Lipids 20.  Sequence of Double-Bond Introduction in the Sponge Sterol 24β-Methylcholesta-5,7,22,25-tetraen-3 β -ol

                                 J. Org. Chem., 54, 1642 (1989)

            by V. John, I. L. Stoilov, C. Djerassi, P. Karuso, A. Poiner and

            P. J. Scheuer

 

1149. Biosynthetic Studies of Marine Lipids 16.  De Novo Sterol Biosynthesis

         in Sponges.  Incorporation and Transformation of Cycloartenol and

         Lanosterol into Unconventional Sterols of Marine and Freshwater

         Sponges

                                 Tetrahedron Letters, No. 45, 1893 (1989)

                                 by R. G. Kerr, I. L. Stoilov, J. E. Thompson and C. Djerassi

 

1150. Biosynthetic Studies of Marine Lipids 22.  Calysterol: Some aspects

         of Sterol Cyclopropene Biosynthesis in the sponge Calyx nicaeensis

                                 Tetrahedron Letters, No. 45, 1273 (1989)

                                 by G. A. Doss, C. J. Silva and C. Djerassi

 

1151. The Distribution of Lipids and Sterols in Cell Types from the Marine Sponge Pseudaxinyssa sp.

                                 Lipids, 24, 210 (1989)

                                 by M. P. Zimmerman, F. C. Thomas, J. E. Thompson,

                                 C. Djerassi, H. Streiner, E. Evans and P. T. Murphy

 

1152. Scope and Regiochemical Control of the Allylpotassium Reaction

           in the Synthesis of Sterols with Unsaturated Side Chains

                                 J. Org. Chem., 54, 2117 (1989)

                                 by J.L. Giner, C. Margot and C. Djerassi

 

1153. Phospholipid Studies of Marine Organisms 22.  Structure and

         Biosynthesis of a Novel Brominated Fatty Acid from a Hymeniacidonid

         Sponge

                                 J. Org. Chem., 54, 3428 (1989)

                                 by W-K. Lam, S. Hahn, E. Ayanoglu and C. Djerassi

 

1154. Minor and Trace Sterols in Marine Invertebrates 61.  Isolation and Structure Elucidation of New A-nor Sterols from the Marine Sponge Phakellia aruensis

            Steroids, 53, 271 (1989)                                

            by  S. Malik and C. Djerassi

 

   1155.  Minor and Trace Sterols in Marine Invertebrates 62.  Novel Coprostanols with     Unusual Side Chains from the Marine Sponge Calyx nicaeensis

            Steroids, 53, 487 (1989)                                

            by  T. B. T. Ha and C. Djerassi

 

1156. The Bitter Pill

                                 Science, 245, 356 (1989)

                                 by Carl Djerassi

 

1157. Unusual Pattern of Fatty Acid Biosynthesis: Evidence for C19

          Desaturase Activity in Freshwater Sponges

                                 J. Biol. Chem., 264, 21043 (1989)

                                 by S. Hahn, W-K. Lam, I. Wu, C. J. Silva and C. Djerassi

 

1158. Biosynthetic Studies of Marine Lipids 24.  Experimental Demonstration

          of an Unprecedented Cyclopropane Cyclopropane Rearrangement in

          the Biosynthesis of the Sponge Sterol Petrosterol

                                 J. Am. Chem. Soc., 112, 305 (1990)

                                 by G. A. Doss, J. R. Proudfoot, C. J. Silva and C. Djerassi

 

 

 

 

1159. Cholesterol Interactions with Tetracosenoic Acid Phospholipids in Model

          Cell Membranes:  Role of the Double-Bond Position

                                 Biochemistry, 29, 3466 (1990)

                                 by E. Ayanoglu, B. H. Chiche, M. Beatty and C. Djerassi

 

1160. Biosynthetic Studies of Marine Lipids 25.  Biosynthesis of  D9(11) and

         D7 -Sterols and Saponins in Sea Cucumbers

                                 J. Org. Chem., 55, 2806 (1990)

                                 by M. L. Cordeiro and C. Djerassi

 

1161. Fertility Awareness: Jet-Age Rhythm Method?

                                 Science, 248, 1061 (1990)

                                 by Carl Djerassi

 

1162. Illuminating Scientific Facts Through Fiction (Commentary)

                                 The Scientist, 4, 16 (1990)

                                 by Carl Djerassi

 

1163. Covalently Bound Fatty Acids in Membrane Proteins of Some Sponges

                                 Comp. Biochem. Physiol., 96B, 597 (1990)

                                 by E. Ayanoglu, M. Rizzolio, S. Beaulieu, J. Roberts, O. Oz

                                 and C. Djerassi

 

1164. Cell Separation of Tethya aurantia, an Analytical Study of Embryonic

          and Differentiated Sponge Cells

                                 Lipids, 25, 383 (1990)

                                 by M. P. Zimmerman, M. Hoberg, E. Ayanoglu and C. Djerassi

 

1165. Biosynthetic Studies of Marine Lipids XXVIII.  Use of Sponge Cell-Free