Saponins from Chinese Folk Medicine, “Liang Wang Cha, ” Leaves and Stems of Nothopanax delavayi, Araliaceae

Abstract

From the Chinese folk medicine “Liang Wang Cha” (leaves and leafstalks of Nothopanax delavayi, Araliaceae), two new oleanane type triterpene glycosides, named liangwanosides I (1) and II (2), were isolated. The structures of 1 and 2 were determined as the 28-β-D-glucopyranosyl and 28-α-L-rhamnopyranosyl (1→4) -β-D-glucopyranosyl (1→6) -, β-D-glucopyranosyl esters of 3-O-α-L-arabinopyranosyl-3β-hydroxyolean-12-ene-28, 29-dioic acid, respectively.