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

Authors: Ernest Wenkert, David W. Cochran, Hugo E. Gottlieb, Edward W. Hagaman, Raimundo Braz Filho, Francisco Jos� de Abreu Matos, Maria Iracema Lacerda Machado Madruga
Published: Helvetica Chimica Acta
Date: 3 November 1976
Category:Chemistry, Structure determination
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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 13C-NMR. analysis of heyneanine determined its C(19) configuration and a similar study of epiheyneanine proved its structure.

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http://dx.doi.org/10.1002/hlca.19760590719
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