摘要
Two new triterpenoid saponins, tanguticoside A and B were isolated from aerial part of Clematis tangutica. Their structures were elucidated as 3-O-beta-D-glucopyranosyl hederagenin 28 O-alpha-L-rhamnopyranosyl- (1-->4)-beta-D-glucopyranosyl- (1-->6)-beta-D-glucopyranosidel and 3-O-beta-D-glucopyranosyl ranosyl- (1-->2)-beta-D-glucopyranosyl hederagenin 28-O-alpha-L-rhamnopyranosyl- (1-->4)-beta-D-glucopyranosyl- (1-->6)-beta-D-glucopyranoside2, respectively.
Two new triterpenoid saponins, tanguticoside A and B were isolated from aerial part of Clematis tangutica. Their structures were elucidated as 3-O-beta-D-glucopyranosyl hederagenin 28 O-alpha-L-rhamnopyranosyl- (1-->4)-beta-D-glucopyranosyl- (1-->6)-beta-D-glucopyranosidel and 3-O-beta-D-glucopyranosyl ranosyl- (1-->2)-beta-D-glucopyranosyl hederagenin 28-O-alpha-L-rhamnopyranosyl- (1-->4)-beta-D-glucopyranosyl- (1-->6)-beta-D-glucopyranoside2, respectively.
