title: [Studies on flavonoids from leave of Eucommia ulmoides Oliv].
abstract: OBJECTIVE
  To separate the constituents from Eucommia ulmoides.
  
  
  METHODS
  The constituents were separated by the repeated chromatography and identified by spectral methods.
  
  
  RESULTS
  The seven compounds were obtained, which were kaempferol(1), quercetin(2), astragalin(3), hirsutin(4), rutin(5), 3,4-dihydrobenzonic acid(6), ethyl glucopyranoside(7).
  
  
  CONCLUSIONS
  Compounds 3-7 were obtained from leaves of E. ulmoides for the first time.
authors.affiliation: School of Pharmaceutical Sciences, Beijing Medical University, Beijing 100083, China.
authors.forename: J
authors.initials: J
authors.lastname: Cheng
authors.forename: Y Y
authors.initials: YY
authors.lastname: Zhao
authors.forename: Y X
authors.initials: YX
authors.lastname: Cui
authors.forename: T M
authors.initials: TM
authors.lastname: Cheng
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification; D031283:Eucommiaceae / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D044949:Kaempferols; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012431:Rutin / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D000470:Alkaloids; D005419:Flavonoids; D044949:Kaempferols; D012431:Rutin; C001579:astragalin; C038369:hirsutine