title: Structure elucidation and complete NMR spectral assignments of two new oleanane-type pentacyclic triterpenoid saponins from the husks of Xanthoceras sorbifolia Bunge.
abstract: Two new saponins were isolated from husks of Xanthoceras sorbifolia Bunge and their structures were elucidated as 3-O-[beta-D-galactopyranosyl(1-->2)]-alpha-L-arabinofuranosyl(1-->3)-beta-D-methyl glucuronic acid-21-O-(3,4-diangeloyl)-alpha-L-rhamnose-3beta, 16alpha, 21beta, 22alpha, 28beta-pentahydroxyl-22-acetoxy-olean-12-ene(1) and 3-O-[beta-D-galactopyranosyl(1-->2)]-alpha-L-arabinofuranosyl(1-->3)-beta-D-methyl glucuronic acid-21,22-O-diangeloyl-3beta,15alpha,16alpha,21beta,22alpha,28beta-hexahydroxyl-olean-12-ene(2) on the basis of 1D and 2D NMR (including (1)H, (13)C-NMR, (1)H-(1)H COSY, HSQC, HMBC and DEPT), ESI-MS spectrometry and chemical methods.
authors.affiliation: College of Pharmacy, Liaoning University of Traditional Chinese Medicine, 77 Life one Road, DD Port, Dalian 116600, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Guo
authors.forename: De-Qiang
authors.initials: DQ
authors.lastname: Dou
authors.forename: Ting-Guo
authors.initials: TG
authors.lastname: Kang
authors.forename: Shi-Cheng
authors.initials: SC
authors.lastname: Wang
authors.forename: Hai-Xue
authors.initials: HX
authors.lastname: Kuang
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D009828:Oleanolic Acid / Q000737:chemistry*; D035261:Plant Components, Aerial / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D029631:Sapindaceae / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; D012503:Saponins; D009828:Oleanolic Acid