Five New Triterpene Glycosides from Wisteria brachybotrys (Leguminosae)

Abstract

From the vines of Wisteria brachybotrys (Leguminosae), five new oleanene glycosides, called wistariasaponineYCl,2, B3 and A2,3, together with four known ones were isolated. Their structures have been elucidated to be3-O-α-L-rhamnopyranosyl-(l→2)-β-D-xylopyranosyl-(l→2)-β-D-glucuronopyranosyl yunganogenin C 21-O-β-D-glucopyranoside (1), 3-O-α-L-rhamnopyranosyl-(l→2)-β-D-galactopyranosyl-(l→2)-β-D-glucuronopyranosyl yunga-nogeninC 21-O-β-D-glucopyranoside (2), 3-O-α-L-rhamnopyranosyl-(l→2)-β-D-xylopyranosyl-(l→2)-β-D-glucu-ronopyranosylwistariasapogenol B 30-O-β-D-glucopyranoside (3), 3-O-α-L-rhamnopyranosyl-(l→2)-β-D-xylopy-ranosyl-(l→2)-β-D-glucuronopyranosylwistartiasapogenol A 30-O-β-D-glucopyranoside (4) and 3-O-β-D-galactopy-ranosyl-(l→2)-β-D-glucuronopyranosylwistartiasapogenol A 30-O-β-D-glucopyranoside (5), respectively. © 1995, The Pharmaceutical Society of Japan. All rights reserved.