title: [Studies on chemical constituents in herb of Polygonum orientale].
abstract: OBJECTIVE
  To study the chemical constituents of the essential substance from Polygonum oriental.
  
  
  METHODS
  Compounds were isolated with silica gel and polyamide chromatography and their structures were determined by spectral analysis and chemical evidence.
  
  
  RESULTS
  Six compounds were obtained and identified as myricitrin, luteolin, gallic acid, catechin, protocatechuic acid, p-hydroxycinnamic acid.
  
  
  CONCLUSIONS
  Six compounds were isolated from P. oriental for the first time.
authors.affiliation: School of pharmacy, Guiyang Medical College, Guiyang 550004, China. homeofwyl@21cn.com
authors.forename: Yong-Jun
authors.initials: YJ
authors.lastname: Li
authors.forename: Xun
authors.initials: X
authors.lastname: He
authors.forename: Li-Na
authors.initials: LN
authors.lastname: Liu
authors.forename: Yan-Yu
authors.initials: YY
authors.lastname: Lan
authors.forename: Ai-Min
authors.initials: AM
authors.lastname: Wang
authors.forename: Yong-Lin
authors.initials: YL
authors.lastname: Wang
mesh_terms: D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D005707:Gallic Acid / Q000737:chemistry / Q000302:isolation & purification*; D062385:Hydroxybenzoates / Q000737:chemistry / Q000302:isolation & purification; D047311:Luteolin / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D028502:Polygonum / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D062385:Hydroxybenzoates; C009091:protocatechuic acid; C008577:myricitrin; D005707:Gallic Acid; D047311:Luteolin