title: [Study on the chemical components from the bark of Nothopanax davidii (Franch) harms].
abstract: Two new oleanane type triterpene glycosides, named yiyeliangwanoside I and yiyeliangwanoside II, were isolated from Nothopanax davidii (Franch) Harms (Araliaceae). Their chemical structures were elucidated by means of chemical and spectrometric analysis. Yiyeliangwanoside I: C57H88O25, a white powder, mp 203-205 degrees C (dec.), [alpha]D20-3.47(c 0.1, CH3OH). Its structure was determined as 3-O-alpha-(3',4'-O-dioic-acetyl)-L-arabinopyranosyl-3 beta-hydroxyolean-12-ene-28,29-dioic acid-28-O-[alpha-L-rhamnopyranosyl-(1----6)-beta-D-glycopyranosyl- (1----4)-beta-D-glycopyranosyl] ester. Yiyeliangwanoside II: C37H56O10, a white powder, mp 240-244 degrees C (dec.), [alpha]D20+36.5(c 0.1, CH3OH). Its structure was determined as 3-O-alpha-(3'-O-acetyl)-L-arabinopyranosyl-3 beta-hydroxyolean-12-ene-28,29-dioic acid.
authors.affiliation: Institute of Materia Medica, West China University of Medical Sciences, Chengdu.
authors.forename: S S
authors.initials: SS
authors.lastname: Yu
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Xiao
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D006027:Glycosides; D014315:Triterpenes; C071821:yiyeliangwanoside II; C071820:yiyeliangwanoside I