5 NEW TRITERPENE GLYCOSIDES FROM WISTERIA-BRACHYBOTRYS (LEGUMINOSAE)

From the vines of Wisteria brachybotrys (Leguminosae), five new oleane ne glycosides, called wistariasaponins YC1,2, B3 and A2,3, together wi th four known ones were isolated. Their structures have been elucidate d to be -D-xylopyranosyl-(1-->2)-beta-D-glucuronopyranosyl yunganogeni n C 21-O-beta-D-glucopyranoside (1), galactopyranosyl-(1-->2)-beta-D-g lucuronopyranosyl yunganogenin C 21-O-beta-D-glucopyranoside (2), -D-x ylopyranosyl-(1-->2)-beta-D-glucuronopyranosyl wistariasapogenol B 30- -O-beta-D-glucopyranoside (3), -D-xylopyranosyl-(1-->2)-beta-D-glucuro nopyranosyl wistartiasapogenol A 30-O-beta-D-glucopyranoside (4) and g alactopyranosyl-(1-->2)-beta-D-glucuronopyranosyl wistariasapogenol A 30-O-beta-D-glucopyranoside (5), respectively.