title: A new oleanane glycoside from the roots of Astragalus caprinus.
abstract: A novel oleanane-type triterpene saponin (1) together with two known molecules, soyasapogenol B and astragaloside VIII were isolated from the roots of Astragalus caprinus. Their structural elucidation was performed mainly by 2D NMR techniques (COSY, TOCSY, NOESY, HSQC, HMBC) and mass spectrometry. Compound 1 was determined as 3-O-[alpha-L-rhamnopyranosyl-(1 --> 2)-beta-D-glucuronopyranosyl]-22-O-beta-D-apiofuranosyl-soyasapogenol B.
authors.affiliation: Laboratoire de Pharmacognosie, Unité UMIB, EA 3660, Faculté de Pharmacie, Université de Bourgogne, 7 Bd. Jeanne D'Arc, BP 87900, 21079 Dijon Cedex, France.
authors.forename: Anne-Claire
authors.initials: AC
authors.lastname: Mitaine-Offer
authors.forename: Tomofumi
authors.initials: T
authors.lastname: Miyamoto
authors.forename: Nabil
authors.initials: N
authors.lastname: Semmar
authors.forename: Maurice
authors.initials: M
authors.lastname: Jay
authors.forename: Marie-Aleth
authors.initials: MA
authors.lastname: Lacaille-Dubois
mesh_terms: D027883:Astragalus Plant / Q000737:chemistry*; D006027:Glycosides / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives* / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry
chemical_list: D006027:Glycosides; C413246:oleanane; D009828:Oleanolic Acid