Cardiac Glycosides from Cryptostegia Grandiflora

Overview

Journal Phytochemistry

Publisher Elsevier

Specialties Biochemistry
Biology
Chemistry

Date 2001 Sep 29

PMID 11576593

Citations 4

Authors

M S Kamel

M H Assaf

Y Abe

K Ohtani

R Kasai

K Yamasaki

Affiliations

Soon will be listed here.

Abstract

From the leaves of Cryptostegia grandiflora, four new cardiac glycosides oleandrigenin 3-O-beta-glucopyranosyl-(1-->4)-beta-cymaropyranosyl-(1-->4)-beta-digitoxopyranoside, cryptostigmin I, oleandrigenin 3-O-beta-glucopyranosyl-(1-->4)-alpha-rhamnopyranoside, cryptostigmin II, 16-propionylgitoxigenin 3-O-beta-glucopyranosyl-(1-->4)-alpha-rhamnopyranoside, cryptostigmin III and oleandrigenin 3-O-beta-glucopyranosyl-(1-->6)-beta-glucopyranosyl-(1-->4)-beta-cymaropyranosyl-(1-->4)-beta-digitoxopyranoside, cryptostigmin IV have been isolated together with two known cardenolides subalpinosid and 16-O-acetyl-digitalinum verum. The structures of the isolated compounds were verified by means of MS and NMR spectral analyses.

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