OLEANANE SAPONINS FROM

Abstract

Polyscias guilfoylei Bail has just studied by our group. From leaves of this plant, four compounds had been isolated: isophytol, oleanolic acid, 3-O-b-D-glucopyranosylspinasterol and 3-O-b-D-glucopyranosyloleanolic acid^[5]. Now we presented five saponins isolated from leaves of this plant:  b-D-glucuronopyranosyloleanolic acid (1), a mixture of two saponins of 3-O-b-D-glucopyranosyl-(1®3)-b-D-glucuronopyranosyloleanolic acid (2a) and 3-O-b-D–glucopyranosyl-(1®4)-b-D-glucurono-pyranosyloleanolic acid (2b) with the ratio of (2:3), 3-O-b-D-glucopyranosyl-(1®3)-[b-D–gluco-pyranosyl-(1®4)]-b-D-glucuronopyranosyloleanolic acid (3), 3-O-b-D-glucopyranosyl-(1®2)-[b-D-glucopyranosyl-(1®4)]-b-D-glucuronopyranosyloleanolic acid (4) and 3-O-b-D-glucopyranosyl-(1®4)-b-D-glucuronopyranosyloleanolic acid 28-O-b-D-glucopyranosyl    ester (5). Their chemical structures were established by spectroscopic analysis.