5-oxo-19,20-dehydroervatamine from leaves of Tabernaemontana corymbosa

Phytochemistry
1993.0

Abstract

A new ervatamine alkaloid, 5-oxo-19,20-dehydroervatamine, in addition to N1-methoxy-19,20-dehydroervatamine, 19,20-dehydroervatamine and methuenine has been isolated from the leaves of Tabernaemontana corymbosa. The structure of the new alkaloid was established by spectral methods. A study of several samples indicated some variation in alkaloidal composition.

DOI： 10.1016/S0031-9422(00)95123-9

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