title: [Analysis of the chemical constituents of Hedyotis diffusa].
abstract: OBJECTIVE
  To analyze the chemical constituents of Hedyotis diffusa.
  
  
  METHODS
  Column chromatographies were used to isolate and purify the chemical constituents of this plant, and their structures were identified by spectral analysis and physicochemical properties.
  
  
  CONCLUSIONS
  Seven compounds were isolated and identified as p-coumaric acid (I), methyl-p-coumarate (II), 2-formyl-5- hydroxymethylfuran (III), quercetin (IV), kaempferol (V), beta-sitosterol(VI) and daucosterol(VII), respectively, among which the compounds II and III were isolated from Hedyotis diffusa for the first time.
authors.affiliation: Key Laboratory of Research of TCM and New Drug, Southern Medical University, Guangzhou 510515, China. cpuzyy@sohu.com
authors.forename: Yong-Yong
authors.initials: YY
authors.lastname: Zhang
authors.forename: Jia-Bo
authors.initials: JB
authors.lastname: Luo
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification*; D002934:Cinnamates / Q000302:isolation & purification; D003373:Coumaric Acids / Q000302:isolation & purification; D005663:Furans / Q000302:isolation & purification; D032064:Hedyotis / Q000737:chemistry*; D044949:Kaempferols / Q000302:isolation & purification; D011422:Propionates; D011794:Quercetin / Q000302:isolation & purification
chemical_list: C539709:2-formyl-5-hydroxymethylfuran; D000972:Antineoplastic Agents, Phytogenic; D002934:Cinnamates; D003373:Coumaric Acids; D005663:Furans; D044949:Kaempferols; D011422:Propionates; C478851:methyl-p-coumarate; C006552:kaempferol; D011794:Quercetin; C495469:p-coumaric acid