title: [Studies on flavonoids from herb of Artemisia ordosica].
abstract: OBJECTIVE
  To study the chemical constituents of Artemisia ordosica.
  
  
  METHODS
  The chemical constituents were isolated and repeatedly purified on silica gel column and the structures were elucidated by the NMR spectra and physico-chemical properties.
  
  
  RESULTS
  Eight flavonoids were obtained and identified as 5-hydroxy-7, 4'-dimethoxyflavanone, 5-hydroxy-7, 4'-dimethoxyflavone, 5, 4'-dihydroxy-7-methoxyflavone, 5, 7-dihydroxy-6, 4'-dimethoxyflavone, 5, 4'-dihydroxy-7-methoxyflavanone, 5, 3', 4'-trihydroxy-7-methoxyflavanone, 5, 7-dihydroxy-3', 4'-dimethoxyflavone and 5, 3', 4'-trihydroxy-7-methoxyflavone.
  
  
  CONCLUSIONS
  All the compounds were obtained from A. ordosica for the first time.
authors.affiliation: State Key Laboratory of OSSO, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China. dongbaozhao@hotmail.com
authors.forename: Dong-Bao
authors.initials: DB
authors.lastname: Zhao
authors.forename: Yu-Xia
authors.initials: YX
authors.lastname: Yang
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Xiu-Hua
authors.initials: XH
authors.lastname: Liu
authors.forename: Han-Qing
authors.initials: HQ
authors.lastname: Wang
mesh_terms: D047310:Apigenin / Q000737:chemistry / Q000302:isolation & purification*; D019306:Artemisia / Q000737:chemistry*; D047309:Flavones / Q000737:chemistry / Q000302:isolation & purification*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D047309:Flavones; D005419:Flavonoids; C044998:apigenin dimethylether; C014568:genkwanin; D047310:Apigenin