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A new 5,11-epoxymegastigmane glucoside from Acanthus ilicifolius
Changhong Huo1, Hong Liang, Guangzhong Tu
1Department of Natural Medicines and the State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100083, P. R. China.
Abstract:
From a China mangrove plant Acanthus ilicifolius Linn., a new compound, 5,11-epoxymegastigmane glucoside (1) was isolated along with one known compound of megastigmane glucosides, (6S, 9S)-roseoside (2). The structure of compound 1 was determined on the basis of 1D- and 2D-NMR techniques (DEPT, COSY, HMBC, HMQC, NOESY) and HR-FABMS. The structure of 1 was established as (1S, 3S, 5R, 6R, 7E)-5,11-epoxy-3-hydroxymegastigman-7-en-9-one-3-O-beta-D-glucopyranoside.
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