title: [Studies on flavonoids of Oxytropis falcata].
abstract: OBJECTIVE
  To investigate the flavonoids of Oxytropisfalcata.
  
  
  METHODS
  Compounds were isolated by column chromatography using silica gel, Sephadex LH -20 and ODS as the adsorbents. Their structures were elucidated by NMR and MS spectroscopic data.
  
  
  RESULTS
  Eight compounds were isolated and elucidated as 2', 4'-dihydroxy-4-methoxy chalcone (1), 2', 4'-dihydroxy chalcone (2), 5,7-dihydroxy-4'-methoxy flavonol (3), 7-hydroxy-4'-methoxy flavanones (4), 3', 7-dihydroxy-2',4'-dimethoxy isoflavan (5), 2'-hydroxy-4'-methoxy chalcone (6), 2'-methoxy-4'-hydroxy chalcone (7), 2',4'-dihydroxy dihydrochalcone (8).
  
  
  CONCLUSIONS
  All compounds were obtained from O. falcata for the first time.
authors: College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
authors: Fang
authors: F
authors: Lu
authors: Xiao-Jie
authors: XJ
authors: Xu
mesh_terms: D047188:Chalcones / Q000737:chemistry / Q000302:isolation & purification; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D033021:Oxytropis / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry
chemical_list: D047188:Chalcones; D005419:Flavonoids; C059354:2',4'-dihydroxychalcone; C031742:2'-hydroxy-4-methoxychalcone