Latifolosides K and L, two new triterpenoid saponins from the bark of Ilexlatifolia

Two new triterpenoid saponins, latifoloside K(1), 3-O-beta -D-glucopyranosy l-(1 -->3)-[alpha -L-rhamnopyranosyl-(1 -->2)-]-alpha -L-arabinopyranosyl 3 beta -hydroxy-urs-12,18-dien-28-oic acid 28-O-beta -D-glucopyranosyl ester and latifoloside L (2), 3-O-beta -D-glucopyranosyl-(1 -->2)-beta -D-glucop yranosyl-(1 -->3)-[alpha -L-rhamnopyranosyl-(1 -->2)-]-alpha -L-arabinopyra nosyl 3 beta ,19 alpha -dihydroxyursolic acid, were isolated from the bark of Ilex latifolia THUNB. Also isolated were two known compounds, ilekudinos ide A (3) and kudinoside G (4), Structural assignments were established on the basis of spectroscopic data and chemical evidence.