title: [Studies on the chemical constituents in ethyl acetate extraction from the fruit of Polygonum orientale].
abstract: OBJECTIVE
  To study on the chemical constituents in ethyl acetate extraction from Polygonum orientale.
  
  
  METHODS
  By repeated silica gel chromatographic seperation and spectral analysis the structures were determined.
  
  
  RESULTS
  Seven compounds were isolated and identified from Polygonum orientale. They were 3,5,7-trihydrochromone (I), kaempferol (II), 5,7,4'-trihydroxydihydroflavonol (III), dihydroquercetin (IV), quercetin (V), p-hydroxyphenylethanol ferulate (VI), p-hydroxyphenylethanol-p-coumaric (VII).
  
  
  CONCLUSIONS
  Compounds II, III are isolated from this plant for the first time.
authors.affiliation: Xinhua Hospital Pharmacy Ministry of Hubei Province, Wuhan 430015, China. benza202@163.com
authors.forename: Zhou-tao
authors.initials: ZT
authors.lastname: Xie
authors.forename: Jin
authors.initials: J
authors.lastname: Hu
mesh_terms: D000085:Acetates; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification*; D005638:Fruit / Q000737:chemistry; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D028502:Polygonum / Q000737:chemistry*; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000085:Acetates; D044948:Flavonols; D044949:Kaempferols; C006552:kaempferol; C007650:ethyl acetate; D011794:Quercetin; C003377:taxifolin