title: [Chemical constituents of caulis Marsdeniae tenocissimae].
abstract: OBJECTIVE
  To study the chemical constitutes of caulis Marsdeniae tenocissimae.
  
  
  METHODS
  70% ethanol extracts of caulis M. tenocissimae were isolated and purified by silica gel column chromatography, Sephadex LH-20 chromatography and semi-preparative reversed phase liquid chromatography (RPLC). The compounds were identified on the basis of spectral analysis, including NMR, MS and IR.
  
  
  RESULTS
  Seven compounds were obtained and identified and their structures were identified as beta-sitosterol (1), condutirol(2), dihydroconduritol(3), betulinic acid(4), lupeol(5), daucosterol(6), 11alpha-O-(2-methylbutyryl)-12beta-O-acetyltenacigeninB(7).
  
  
  CONCLUSIONS
  Compound 4, 5 were isolated from the genus for the first time.
authors.affiliation: Department of drug, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China. syyycs@163.com
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
authors.forename: Zhidong
authors.initials: Z
authors.lastname: Pei
authors.forename: Chunxue
authors.initials: C
authors.lastname: Li
authors.forename: Tingguo
authors.initials: T
authors.lastname: Kang
mesh_terms: D029062:Apocynaceae / Q000737:chemistry*; D010936:Plant Extracts / Q000032:analysis* / Q000302:isolation & purification; D018547:Plant Stems / Q000737:chemistry
chemical_list: D010936:Plant Extracts