title: [Study on chemical constituents of Portulaca oleracea].
abstract: OBJECTIVE
  To investigate chemical constituents of Portulaca oleracea.
  
  
  METHODS
  The constituents were isolated by various column chromatography methods, and their structures were elucidated by spectral analysis.
  
  
  RESULTS
  Five compounds were isolated from 70% ethanol extract and their structures were elucidated as oleracein A(1), oleracein B(2), oleracein E(3), hesperidin (4) and caffeic acid (5).
  
  
  CONCLUSIONS
  Compound 4 and 5 are isolated from Portulaca oleracea for the first time.
authors.affiliation: School of Chinese Material Medica, Jilin Agricultural University, Changchun 130118, China.
authors.forename: Zi-juan
authors.initials: ZJ
authors.lastname: Yang
authors.forename: Yi-nan
authors.initials: YN
authors.lastname: Zheng
authors.forename: Lan
authors.initials: L
authors.lastname: Xiang
mesh_terms: D002109:Caffeic Acids / Q000737:chemistry / Q000302:isolation & purification*; D006569:Hesperidin / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D031822:Portulaca / Q000737:chemistry*
chemical_list: D002109:Caffeic Acids; D006569:Hesperidin; C040048:caffeic acid