title: [Chalcones from Bauhinia glauca subsp. pernervosa].
abstract: OBJECTIVE
  To study the chemical constituents of Bauhinia glauca subsp. pernervosa.
  
  
  METHODS
  The coulis of B. glauca subsp. pernervosa were extracted with 95% EtOH at room temperature. The compounds were isolated and separated by chromatographic techniques, and structures were identified by spectroscopic methods.
  
  
  RESULTS
  Seven chalcones were isolated and identified: butein-4-methyl ether (1), isoliquiritigenin (2), butein (3), isoliquiritigenin-2'-methyl ether (4), 2',4'-dihydroxychalcone (5), isoliquiritigenin-4-methyl ether (6), 4-hydroxy-2',4'-dimethoxychalcone (7).
  
  
  CONCLUSIONS
  Compounds 1, 3, and 7 were isolated from the genus Bauhinia for the first time, the other compounds were obtained from this plant for the first time.
authors.affiliation: Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China.
authors.forename: Zengbao
authors.initials: Z
authors.lastname: Wu
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
authors.forename: Yuying
authors.initials: Y
authors.lastname: Zhao
authors.forename: Xiuwei
authors.initials: X
authors.lastname: Yang
authors.forename: Hong
authors.initials: H
authors.lastname: Liang
mesh_terms: D036481:Bauhinia / Q000737:chemistry*; D047188:Chalcones / Q000737:chemistry* / Q000302:isolation & purification; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D047188:Chalcones; D004365:Drugs, Chinese Herbal