Triterpenoid glycosides of Fatsia japonica. II. Isolation and structure ofglycosides from the leaves

The previously known triterpenoid 3-O-alpha -L-arabinopyranosides of oleano lic and echinocystic acids and hederagenin, 3-O-beta -D-glucopyranosyl-(1 - ->2)-O-alpha -L-arabinopyranosides of oleanolic acid and hederagenin, in ad dition to 28-O-alpha -L-rhamnopyranosyl-(1 -->4)-O-beta -D-glucopyranosyl-( 1-6)-O-beta -D-glucopyranosyl ethers of the 3-O-alpha -L-arabinopyranoside of hederagenin, and 3-O-beta -D-glucopyranosyl-(1 -->2)-O-alpha -L-arbinopy ranosides of oleanolic acid and hederagenin, respectively, are isolated fro m leaves of Fatsia japonica (Araliaceae). The structures of the glycosides are confirmed by chemical Methods and (CNMR)-C-13 spectroscopy.