Zur NMR-Spektroskopie vonN-Acylaporphin-Alkaloiden ausTinospora crispa

1 April 1992

journal article
research article
Published by Georg Thieme Verlag KG in Planta Medica

Vol. 58 (02) , 184-187
https://doi.org/10.1055/s-2006-961425

Abstract

N-Formylannonaine (1), N-formylnornuciferine (2) and N-acetylnornuciferin (3), have been isolated from stems of Tinospora crispa (Menispermaceae), and their NMR-spectra have been fully assigned by 2D-NMR experiments. This is the first reported occurrence of N-formyl- and N-acetylaporphines from the genus Tinospora.

Keywords

TINOSPORA CRISPA
MENISPERMACEAE
APORPHINE ALKALOIDS
N-FORMYLANNONAINE
N-FORMYLNORNUCIFERINE
N-ACETYLNORNUCIFERINE
NMR-ASSIGNMENTS
CONFORMATIONAL EQUILIBRIUM OF N-ACYLAPORPHINES

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