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13C-NMR. Spectroscopy of Naturally Occurring Substances. XLV. Iboga Alkaloids

✍ Scribed by Ernest Wenkert; David W. Cochran; Hugo E. Gottlieb; Edward W. Hagaman; Raimundo Braz Filho; Francisco José de Abreu Matos; Maria Iracema Lacerda Machado Madruga

Publisher
John Wiley and Sons
Year
1976
Tongue
German
Weight
399 KB
Volume
59
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The carbon shifts of the Iboga‐type alkaloids catharanthine, voacangine, coronaridine, ibogaine, dihydrocatharanthine and epiibogamine were recorded and correlated with the conformation of the natural bases. A ^13^C‐NMR. analysis of heyneanine determined its C(19) configuration and a similar study of epiheyneanine proved its structure.

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