Minor Triterpenoid Saponins from the Leaves of Bupleurum rotundifolium L.

Abstract

Two new minor triterpenoid saponins, rotundioside D (1) and rotundioside G (2), isolated from the leaves of Bupleurum rotundifolium L., were characterized as 16α, 28-dihydroxyolean-12-en-3β-yl α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranosyl-(1→2)-β-D-glucopyranoside (1) and 13β, 28-epoxy-16α-hydroxyolean-11-en-3β-D-xylopyranosyl-(1→2)-β-D-glucopyranosyl-(1→2)-β-D-fucopyranoside (2), respectively, on the basis of chemical and spectroscopic evidence.