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13 C‐NMR. Spectroscopy of Naturally Occurring Substances. XLV. Iboga Alkaloids
Author(s) -
Wenkert Ernest,
Cochran David W.,
Gottlieb Hugo E.,
Hagaman Edward W.,
Filho Raimundo Braz,
de Abreu Matos Francisco José,
Lacerda Machado Madruga Maria Iracema
Publication year - 1976
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19760590719
Subject(s) - chemistry , stereochemistry , nuclear magnetic resonance spectroscopy
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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