title: [Studies on antiviral flavonoids in yinqiaosan powder].
abstract: OBJECTIVE
  To study the chemical constituents in Yinqiaosan Powder that have antiviral action on influenza.
  
  
  METHODS
  Isolation of the constituents by different kinds of column chromatography and elucidation of their structures by chemical and spectral methods.
  
  
  RESULTS
  Seven flavonoids were obtained, and six of them were identified as linarin, acacetin, hesperidin, isoquiritigenin, isoquiritin and hyperoside respectively.
  
  
  CONCLUSIONS
  Linarin and acacetin were isolated from Yinqiaosan Powder for the first time.
authors.affiliation: School of Chinese Pharmacology, Beijing University of Chinese Medicine, Beijing 100029, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Shi
authors.forename: R B
authors.initials: RB
authors.lastname: Shi
authors.forename: B
authors.initials: B
authors.lastname: Liu
authors.forename: Y R
authors.initials: YR
authors.lastname: Lu
mesh_terms: D000998:Antiviral Agents / Q000032:analysis*; D004338:Drug Combinations; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D047309:Flavones; D005419:Flavonoids / Q000032:analysis*; D006027:Glycosides / Q000032:analysis; D006569:Hesperidin / Q000032:analysis*; D010946:Plants, Medicinal / Q000737:chemistry*; D011208:Powders
chemical_list: D000998:Antiviral Agents; D004338:Drug Combinations; D004365:Drugs, Chinese Herbal; D047309:Flavones; D005419:Flavonoids; D006027:Glycosides; D011208:Powders; D006569:Hesperidin; C008282:linarin; C023717:acacetin