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New triterpene saponins from the root of Ilex pubescens
Cui-Xian Zhang1, Chao-Zhan Lin, Tian-Qin Xiong
1School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, 232 Waihuan East Road, Guangzhou, Guangdong Province, 510006, RP China.
Abstract:
Two new triterpene glycosides named ilexpublesnin A (1) and ilexpublesnin B (2) were isolated from the root of Ilex pubescens. Their structures were determined as 3-O-(β-D-xylopyranosyl)-28-O-(β-D-glucopyranosyl)-3β, 19α-dihydroxyurs-23-oxo-12-en-28-oic acid (1) and 28-O-(β-D-xylopyranosyl-(2→1)-β-D-glucopyranosyl)-3β, 19α-dihydroxyurs-23-oxo-12-en-28-oic acid (2) on the basis of chemical and spectroscopic methods.
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