title: Triterpenoid saponins from Clematis chinensis.
abstract: From the roots of Clematis chinensis, two new triterpenoid saponins, named clematichinenoside A and B, were isolated and their structures were elucidated as 3-O-beta-D-ribopyranosyl-(1-3)-alpha-L-rhamnopyranosyl-(1-2)-alpha -L- arabinopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl ester and 3-O-beta-D-glucopyranosyl-(1-4)-beta-D-ribopyranosyl-(1-3)-alpha-L - rhamnopyranosyl-(1-2)-alpha-L-arabinopyranosyl hederagenin 28-O-alpha-L-rhamnopyranosyl-(1-4)-beta-D-glucopyranosyl-(1-6)- beta-D-glucopyranosyl ester, respectively. In addition oleanolic acid, hederagenin and seven known saponins were obtained.
authors.affiliation: Shanghai Institute of Materia Medica, Chinese Academy of Sciences.
authors.forename: B
authors.initials: B
authors.lastname: Shao
authors.forename: G
authors.initials: G
authors.lastname: Qin
authors.forename: R
authors.initials: R
authors.lastname: Xu
authors.forename: H
authors.initials: H
authors.lastname: Wu
authors.forename: K
authors.initials: K
authors.lastname: Ma
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008516:Medicine, Chinese Traditional; D008969:Molecular Sequence Data; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives*; D009844:Oligosaccharides / Q000737:chemistry / Q000302:isolation & purification; D018517:Plant Roots; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D009844:Oligosaccharides; D012503:Saponins; D014315:Triterpenes; C094229:clematichinenoside A; C094230:clematichinenoside B; D009828:Oleanolic Acid