title: Triterpene saponins from Abrus cantoniensis (Leguminosae). II. Characterization of six new saponins having a branched-chain sugar.
abstract: The chemical structures of abrisaponins So1 (1), So2 (2), D2 (3), D3 (4), F (5) and SB (6), six of twenty-three saponins from Abri Herba, the whole plants of Abrus cantoniensis (Leguminosae), were investigated. They were elucidated to be 3-O-alpha-L-rhamnopyranosyl-(1 --> 2)-[O-beta-D-glucopyranosyl-(1-->3)]-beta-D-galactopyranosyl-(1 --> 2)-beta-D-glucuronopyranosyl [sequence: see text] (designated as beta-abritetraosyl) sophoradiol (1), 3-O-beta-abritetraosyl sophoradiol 22-O-beta-D-xylopyranoside (2), 3-O-beta-abritetraosyl abrisapogenol D (3), O-beta-abritetraosyl abrisapogenol D 22-O-beta-D-glucopyranoside (4), 3-O-beta-abritetraosyl abrisapogenol F (5) and 3-O-beta-abritetraosyl soyasapogenol B (6), respectively.
authors.affiliation: Faculty of Pharmaceutical Sciences, Kumamoto University, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Miyao
authors.forename: Y
authors.initials: Y
authors.lastname: Sakai
authors.forename: T
authors.initials: T
authors.lastname: Takeshita
authors.forename: Y
authors.initials: Y
authors.lastname: Ito
authors.forename: J
authors.initials: J
authors.lastname: Kinjo
authors.forename: T
authors.initials: T
authors.lastname: Nohara
mesh_terms: D007887:Fabaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010946:Plants, Medicinal; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D012503:Saponins