Triterpenoids from roots of Potentilla anserina / 中草药

ABSTRACT

Objective To study the structures of three compounds isolated from the roots of Potentilla anserine.Methods These compounds were isolated and purified by the technique of macroporous resin,silica gel,and HPLC,respectively.The structures of these compound were established by chemical and spectroscopic means,especially 1D and 2D NMR.Results A novel ursane-galactoside was isolated from the roots of P.anserine along with two known ursane-and oleanane-type triterpene glycosides.The new compound was identified as 2?,3?, 19?-trihydroxyurs-28-O-?-D-galactonopyranosyl ester(anserinoside,Ⅱ).The known compounds were elucidated as 2?-3?,19?-trihydroxy-oleanolic acid-28-O-?-D-glucoside(24-deoxy-sericoside,Ⅰ) and 2-carbonyl-3?-19?-dihydroxyurs-28-O-?-D-glucoside(2-oxo-pomolic acid ?-D-glucopyranosyl ester,Ⅲ).Conclusion The three compounds including the new compound are isolated from the roots of P.anserine for the first time and anserinoside is a new one.