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Abstract
Nine compounds were isolated from the leaves of Anthocephalus chinensis by column chromatography on silica gel and Sephadex LH-20, and their structures were elucidated by spectroscopic techniques as clethric acid-28-O-β-d-glucopyranosyl ester (1), mussaendoside T (2), β-stigmasterol (3), hederagenin (4), ursolic acid (5), clethric acid (6), 3β,6β,19α,24-tetrahydroxyurs-12-en-28-oic acid (7), mussaendoside I (8), and cadambine (9). Compounds 1 and 2, and 7 and 8 were isolated from the plants of this genus for the first time, and compounds 1 and 2 were new triterpenoid glycosides.
Acknowledgements
We thank Instruments Center of Phytochemistry Laboratory, Kunming Institute of Botany, Chinese Academy of Sciences, Research Center for Analysis of National Drugs and Metabolites, Institute of Materia Medica, and Chinese Academy of Medical Sciences for spectroscopic experiments. This study was financially supported by the Key Direction Project, Knowledge Innovation Program of Chinese Academy of Sciences (KSCX2-EW-R-15, KSCX2-YW-R-132), and 863 Program of China (2007AA021504).