title: [Studies on chemical constituents from root of Hedysarum polybotrys].
abstract: OBJECTIVE
  To study the chemical constituents of Hedysarum polybotrys.
  
  
  METHODS
  Chromatographic methods were used to isolate compounds from H. polybotrys and chemical and spectral methods were used to elucidate the structures of the isolated compounds.
  
  
  RESULTS
  Five compounds, N,N,N-trimethyl-tropaphone inner salt (hypaphorine) (1), octadecyl-3-methoxy-4-hydroxy-benzeneacrylate (2), 5,7,4'-trihydroxy-dihydroflavanone 5,7-di-O-beta-D-glucopyranoside (3), 3,4,5-trimethoxy cinnamic acid methy ester (4) and vanillic acid (5), were isolated from the roots of H. polybotrys.
  
  
  CONCLUSIONS
  Compounds 1, 2 and 3 were obtained from this plant for the first time, while compounds 1 and 2 were isolated from Hedysarum for the first time.
authors.affiliation: Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, Beijing 100083, China.
authors.forename: Li-qian
authors.initials: LQ
authors.lastname: Hai
authors.forename: Qing-ying
authors.initials: QY
authors.lastname: Zhang
authors.forename: Yu-ying
authors.initials: YY
authors.lastname: Zhao
authors.forename: Hong
authors.initials: H
authors.lastname: Liang
authors.forename: Nian-Sheng
authors.initials: NS
authors.lastname: Du
mesh_terms: D000179:Acrylates / Q000737:chemistry / Q000302:isolation & purification*; D007887:Fabaceae / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry / Q000302:isolation & purification*; D008968:Molecular Conformation; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D000179:Acrylates; D007211:Indoles; C502944:octadecyl-3-methoxy-4-hydroxy-benzeneacrylate; C001529:lenticin