title: Structural determination of saponins from Hedysarum polybotrys.
abstract: Four saponins (1-4) were isolated from the roots of Hedysarum polybotrys Hand.-Mazz. and obtained from Hedysarum (Tourn.) L for the first time. Their structures were identified on the basis of spectroscopic data. MS, 1D and 2D NMR including HMQC, HMBC, 1H-1H COSY and NOESY permitted correct assignments of all 1H and 13C signals of 1 and 2, and the 13C NMR data of 2 were reported for the first time.
authors.affiliation: Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100083, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Liu
authors.forename: Qingying
authors.initials: Q
authors.lastname: Zhang
authors.forename: Hubiao
authors.initials: H
authors.lastname: Chen
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
authors.forename: Dongge
authors.initials: D
authors.lastname: An
authors.forename: Yuying
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D002247:Carbon Isotopes / Q000032:analysis; D007887:Fabaceae / Q000737:chemistry*; D006859:Hydrogen / Q000032:analysis; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D002247:Carbon Isotopes; D012503:Saponins; D006859:Hydrogen