title: [Studies on chemical constituents of phenols in fresh Houttuynia cordata].
abstract: OBJECTIVE
  To study the aqueous constituents of Houttuynia cordata.
  
  
  METHODS
  Various columns including Diaion HP-20, Sephadex LH-20, ODS and silica gel were employed for the isolation and purification of compounds from H. cordata. The structures of the compounds were identified by physiochemical properties and spectral analysis.
  
  
  RESULTS
  Five compounds were isolated, and their structures were identified as chlorogenic methyl ester (1), (E)-4-Hydroxy-4-[3'-(beta-D-glucopyranosyloxy) butylidene]-3, 5, 5-trimethyl-2-cyclohexen-1-one (2), 2-(3, 4-dihydroxyphenyl) ethyl-beta-D-glucopyranoside (3), p-hydroxyphenethyl-beta-D-glucoside (4), 4-(beta-D-glucopyranosyloxy)-3-hydroxy-Benzoic acid (5).
  
  
  CONCLUSIONS
  All compounds were isolated from this plant for the first time.
authors.affiliation: GuangDong Pharmaceutical University, Guangzhou 510000, China. jiangmeng666@126.com
authors.forename: Jiang
authors.initials: J
authors.lastname: Meng
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Dong
authors.forename: Yi-Sheng
authors.initials: YS
authors.lastname: Zhou
authors.forename: Zhi-Hong
authors.initials: ZH
authors.lastname: Jiang
authors.forename: Sze-Yin Kelvin
authors.initials: SY
authors.lastname: Leung
authors.forename: Zhong-Zhen
authors.initials: ZZ
authors.lastname: Zhao
mesh_terms: D002726:Chlorogenic Acid / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D002850:Chromatography, Gel; D003512:Cyclohexanones / Q000737:chemistry / Q000302:isolation & purification*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D052859:Houttuynia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010636:Phenols / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: C503180:2-(3,4-dihydroxyphenyl)ethyl-O-glucopyranoside; C530448:4-hydroxy-4-(3'-glucopyranosyloxybutylidene)-3,5,5-trimethyl-2-cyclohexen-1-one; D003512:Cyclohexanones; D005960:Glucosides; D010636:Phenols; D002726:Chlorogenic Acid; C417238:methyl chlorogenate