title: [Study on triterpenes of Microtropis tiflora].
abstract: OBJECTIVE
  To study the chemical constituents of Microtropis triflora.
  
  
  METHODS
  The compounds were isolated by chromatography on silica gel and Sephadex LH-20. There structures were elucidatedby by chemical methods and spectral analysis.
  
  
  RESULTS
  Five triterpenoids were isolated and elucidated as friedelin (1), 3-oxo-28-friedelanoic acid (2), 29-hydroxy-3-friedelanone (3), salaspermic acid (4), orthosphenic acid (5).
  
  
  CONCLUSIONS
  Compounds 1-5 are all isolated from M. triflora for the first time.
authors.affiliation: Colloege of Food Science, Biotechnology & Enviromental Engineering, Zhejiang Gongshang University, Hangzhou 310035, China. wkw220@sohu.com
authors.forename: Kui-wu
authors.initials: KW
authors.lastname: Wang
authors.forename: Xin-ling
authors.initials: XL
authors.lastname: Hu
authors.forename: Lian-qing
authors.initials: LQ
authors.lastname: Shen
authors.forename: Yuan-jiang
authors.initials: YJ
authors.lastname: Pan
mesh_terms: D029753:Celastraceae / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D000094042:Lupanes
chemical_list: D014315:Triterpenes; C074717:salaspermic acid; C064307:orthosphenic acid; C060796:friedelin; D000094042:Lupanes