title: [Studies on chemical constituents from Davidia involucrata var. vilmoriniana].
abstract: OBJECTIVE
  To study the chemical constituents of Davidia involucrata var. vilmoriniana.
  
  
  METHODS
  The chemical constituents were isolated by column chromatography on silical gel and sephadex LH -20. Their structures were elucidated on the basis of spectral analysis and physical constants.
  
  
  RESULTS
  Seven compounds were isolated from this plant and the structures of them were identified as 3, 4, 5-trihydroxybenzoic acid (1), ellagic acid (2), maleic acid (3), quercetin (4), quercetin-3-O-beta-D-galactoside (5), 2alpha, 3alpha, 19alpha, 23-tetrahydroxyurs-12-en-28-oic-acid-28-O-beta-D-glucopyranosyl ester (6), ethyl brevifolin carbosylate (7), respectively.
  
  
  CONCLUSIONS
  Compounds 1-7 were isolated from this plant for the first time.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
authors.forename: Jian-Bo
authors.initials: JB
authors.lastname: Yang
authors.forename: Teng-Fei
authors.initials: TF
authors.lastname: Ji
authors.forename: Ai-Guo
authors.initials: AG
authors.lastname: Wang
authors.forename: Ya-Lun
authors.initials: YL
authors.lastname: Su
mesh_terms: D002845:Chromatography; D029767:Cornaceae / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D004365:Drugs, Chinese Herbal