title: [Studies on chemical constituents of Tibetan medicine Caryopteris toroetii].
abstract: OBJECTIVE
  To study the chemical constituents of the Tibetan medicine Caryopteris toroetii.
  
  
  METHODS
  The crude drug was extracted with 95% EtOH and isolated by repeatedly chromatographic methods. The structures of the isolated compounds were elucidated by spectral analysis.
  
  
  RESULTS
  Six compounds were yielded and identified as: phenethyl cinnamide (1), 1-hydroxy-2, 3, 4, 5-tetramethoxy-xanthone (2), 1-hydroxy-2, 3, 5-trimethoxy-xanthone (3), (2S)-5-hydroxy-7-methoxyflavanone (4), 2', 4'-dihydroxydihydrochalcone (5) and rutin (6).
  
  
  CONCLUSIONS
  All the above compounds were obtained from C. toroetii for the first time.
authors.affiliation: Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100083, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Que
authors.forename: Yu-ying
authors.initials: YY
authors.lastname: Zhao
authors.forename: Qing-ying
authors.initials: QY
authors.lastname: Zhang
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D000431:Ethanol; D019686:Lamiaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D012431:Rutin / Q000737:chemistry
chemical_list: D004365:Drugs, Chinese Herbal; D000431:Ethanol; D012431:Rutin