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13C-NMR. Spectroscopy of Naturally Occurring Substances. XXXII. Vincaleucoblastine and related alkaloids

✍ Scribed by Ernest Wenkert; Edward W. Hagaman; Bansi Lal; Gerald E. Gutowski; Allen S. Katner; Jean C. Miller; Norbert Neuss

Publisher
John Wiley and Sons
Year
1975
Tongue
German
Weight
918 KB
Volume
58
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The total assignment of the ^13^C‐shifts of the complex Vinica rosea L. alkaloids vincaleucoblastine, leurosidine and leurosine and of a synthetic isomer of the latter is presented. The structure of leurosidine is corrected and a tentative structure for the acid‐catalyzed product of isomerization of leurosine is proposed.

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