title: [Studies on flavonoids from Blumea riparia].
abstract: OBJECTIVE
  To separate and identify the chemical constituents of Blumea riparia.
  
  
  METHODS
  The compounds were separated and purified by repeated silica gel, Sephadex LH -20 column chromatographiy. The structures of these compounds isolated were identified by analysis of their spectral data, physical and chemical properties.
  
  
  RESULTS
  Six flavonoids were isolated from B. riparia. and their structures were identified as eriodictyol-7, 4'-dimethyl ether (1), eriodictyol-7, 3'-dimethyl ether (2), eriodictyol-7-methyl ether (3), quercetin-7, 3', 4'-trimethyl ether (4), tamarixetin (5), rhamnocitrin (6).
  
  
  CONCLUSIONS
  Compound 1-6 were obtained from B. riparia for the first time.
authors.affiliation: School of Traditional Chinese Material Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Jia-Qing
authors.initials: JQ
authors.lastname: Cao
authors.forename: Shu-Wei
authors.initials: SW
authors.lastname: Sun
authors.forename: Huan
authors.initials: H
authors.lastname: Chen
authors.forename: Ya-Nan
authors.initials: YN
authors.lastname: Wang
authors.forename: Yue-Hu
authors.initials: YH
authors.lastname: Pei
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D005419:Flavonoids / Q000032:analysis* / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids