title: [Structure determination of saponin IX and X from Dipsacus asper Wall].
abstract: Two new triterpenoid glycosides (IX and X) were isolated from the ethanol extracts of the roots of Dipsacus asper Wall. Their structures were deduced as 3-O-[beta-D-xylopyranosyl (1-->4)-beta-D-glucopyranosyl(1-->4)] [alpha-L-rhamnopyranosyl (1-->3)]-beta-D-glucopyranosyl(1-->3)-alpha-L-rhamnopyranosyl(1-->2)- alpha-arabinopyranosyl-hederagenin (IX) and 28-O-beta-D-glucopyranosyl(1-->6)- beta-D-glucopyranosyl ester of IX (X), based on spectral and chemical analysis.
authors.affiliation: China-Japan Friendship Institute of Clinical Medical Sciences, Beijing.
authors.forename: Y W
authors.initials: YW
authors.lastname: Zhang
authors.forename: Z
authors.initials: Z
authors.lastname: Xue
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification
chemical_list: C080644:3-O-(xylopyranosyl(1-4)glucopyranosyl(1-4))rhamnopyranosyl(1-3)glucopyranosyl(1-3)rhamnopyranosyl(1-2)arabinopyranosyl-hederagenin; D004365:Drugs, Chinese Herbal; D009828:Oleanolic Acid