ARALIASAPONINS I-XI, TRITERPENE SAPONINS FROM THE ROOTS OF ARALIA-DECAISNEANA

Seven new oleanane-type and four new ursane-type triterpene saponins, named araliasaponins I-XI were isolated from the roots of Aralia decai sneana, together with four known triterpene saponins. On the basis of the chemical and spectroscopic evidence, the structures of these new s aponins were elucidated as follows: 3-O-beta-D-xylopyranosyl-(1 --> 3) -beta-D-glucopyranosyl-(1 --> 3)-[beta-D-xylopyranosyl-(1 --> 2)]-alph a-L-arabinopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl ester, 3-O-beta-D-glucopyranosyl-(1 --> 3)-alpha-L-arabinopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl-(1 --> 6)-beta-D-glucopyranosyl ester , 3-O-beta-D-glucopyranosyl-(1 --> 3)-[beta-D-xylopyranosyl-(1 --> 2)] -alpha-L-arabinopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl-(1 --> 6)-beta-D-glucopyranosyl ester, 3-O-beta-D-glucopyranosyl(1 --> 3 )-[beta-D-xylopyranosyl-(1 --> 2)]-beta-D-glucopyranosyl oleanolic aci d 28-O-beta-D-glucopyranosyl ester, 3-O-beta-D-glucopyranosyl-(1 --> 3 )-[beta-D-xylopyranosyl-(1 --> 2)]-beta-D-galactopyranosyl oleanolic a cid, 3-O-beta-D-glucopyranosyl-(1 --> 3)-[beta-D-xylopyranosyl-(1 --> 2)]-beta-D-galactopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl ester, 3-O-beta-D-glucopyranosyl-( 1 --> 3)-[beta-D-xylopyranosyl-(1 - -> 2)]-beta-D-galactopyranosyl oleanolic acid 28-O-beta-D-glucopyranos yl-(1 --> 6)-beta-D-glucopyranosyl ester, 3-O-beta-D-glucopyranosyl-(1 --> 3)-[beta-D-xylopyranosyl-(1 --> 2)]-alpha-L-arabinopyranosyl urso lic acid 28-O-beta-D-glucopyranosyl ester, 3-O-beta-D-glucopyranosyl-( 1 --> 3)-[beta-D-xylopyranosyl-(1 --> 2)]-alpha-L-arabinopyranosyl urs olic acid, 3-O-beta-D-glucopyranosyl-(1 -> 3)-alpha-L-arabinopyranosyl ursolic acid 28-O-beta-D-glucopyranosyl-(1 --> 6)-beta-D-glucopyranos yl ester and 3-O-beta-D-glucopyranosyl-(1 --> 3)-[beta-D-xylopyranosyl -(1 --> 2)]-beta-D-glucopyranosyl ursolic acid 28-O-beta-D-glucopyrano syl ester.