title: [Study on chemical constituents from flowers of Ailanthus altissima].
abstract: OBJECTIVE
  To isolate and identify the chemical constituents from the flowers of Ailanthus altissima.
  
  
  METHODS
  Macroporous adsorptive resins (DM130), Silica gel, Sephadex LH-20, ODS were employed for the isolation and purification of chemical constituents. The structures were identified on the basis of spectral data and physicochemical examination.
  
  
  RESULTS
  Eight compounds were isolated and identified as follows: brevifolin (1), brevifolin carboxylic acid (2), methyl brevifolin carboxylate (3), ellagic acid (4), diethyl-2,2',3,3',4,4'- hexahydroxybiphenyl-6,6'-dicarboxylate (5), rutin (6), gallic acid (7), ethyl gallate (8).
  
  
  CONCLUSIONS
  Compounds 1 -5 are isolated from this genus for the first time.
authors.affiliation: Institute of Materia Medica, University of Jinan Shandong Academy of Medical Sciences, School of Medinice and Life Sciences, Key Laboratory of Rare and Uncommon Diseases of Shandong Province, Jinan 250062, China. lkq0806@163.com
authors.forename: Ke-Qin
authors.initials: KQ
authors.lastname: Lou
authors.forename: Wen-Zhao
authors.initials: WZ
authors.lastname: Tang
authors.forename: Xiao-Jing
authors.initials: XJ
authors.lastname: Wang
mesh_terms: D032268:Ailanthus / Q000737:chemistry*; D001578:Benzopyrans / Q000737:chemistry / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D004610:Ellagic Acid / Q000737:chemistry / Q000302:isolation & purification; D035264:Flowers / Q000737:chemistry*; D012431:Rutin / Q000737:chemistry / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet; D043823:Taxoids / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C523498:8,9-single-epoxy brevifolin; D001578:Benzopyrans; D004365:Drugs, Chinese Herbal; D043823:Taxoids; C087786:methyl brevifolincarboxylate; D004610:Ellagic Acid; D012431:Rutin