Two New Lupane-Triterpene Glycosides from Leaves of Acanthopanax koreanum.

Abstract

Two new lupane-triterpene glycosides, acankoreoside A (1) and B (2), were isolated from the leaves of Acanthopanax koreanum NAKAI (Araliaceae). Based on spectroscopic data, the chemical structures of 1 and 2 were determined as 3α-hydroxy-lup-20(29)-en-23, 28-dioic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester and 3α, 11α, 23-trihydroxy-lup-20(29)-en-28-oic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl- (1→6)-β-D-glucopyranosyl ester, respectively.