A new oleanane glycoside from the roots of Astragalus caprinus.
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.
Mitaine-Offer
Anne-Claire
AC
Laboratoire de Pharmacognosie, Unité UMIB, EA 3660, Faculté de Pharmacie, Université de Bourgogne, 7 Bd. Jeanne D'Arc, BP 87900, 21079 Dijon Cedex, France.
Miyamoto
Tomofumi
T
Semmar
Nabil
N
Jay
Maurice
M
Lacaille-Dubois
Marie-Aleth
MA
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
D006027:Glycosides; C413246:oleanane; D009828:Oleanolic Acid