title: Saponins from Oxytropis bicolor.
abstract: Two new trace saponins were isolated from Oxytropis bicolor by column chromatography and preparative TLC on silica gel. The structures were elucidated as 16-O--[beta-D-glucopyranosyl(1-->3)-beta-D-glucopyranosyl]-(20S, 24S)-3 beta, 16 beta, 20,24,25-pentahydroxy-9,19-cyclolanostane and 16-O-[beta-D-glucopyranosyl(1-->3)-beta-D-glucopyranosyl-20-O-alpha-L -arabinopyranosyl-(20S,24X)-3 beta, 16 beta,20,25-pentahydroxy-9, 19-cyclolanostane on the basis of chemical evidence and spectral analysis.
authors.affiliation: Department of Fine Chemical Technology, East China University of Science and Technology, Shanghai, Republic of China.
authors.forename: R Q
authors.initials: RQ
authors.lastname: Sun
authors.forename: J C
authors.initials: JC
authors.lastname: Chen
mesh_terms: D002236:Carbohydrate Conformation; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry / Q000379:methods; D010947:Plants, Toxic / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014315:Triterpenes
chemical_list: C104337:16-O-(glucopyranosyl(1-3)-glucopyranosyl)-3,16,20,24,25-pentahydroxy-9,19-cyclolanostane; C104338:16-O-(glucopyranosyl(1-3)glucopyranosyl-20-O-arabinopyranosyl)-3,16,20,24,25-pentahydroxy-9,19-cyclolanostane; D012503:Saponins; D014315:Triterpenes