title: [Chemical constituents in herbs of Polygonum jucundum].
abstract: OBJECTIVE
  To investigate the chemical constituents in herbs of Polygonum jucundum.
  
  
  METHODS
  The 85% ethanol extract was separated by means of silica gel and Sephadex LH-20 column chromatography. The compounds isolated from the plant were identified by physicochemical properties and spectroscopic evidence.
  
  
  RESULTS
  Eight compounds were isolated and identified as: quercetin-3'-O-beta-D-galactoside (1), 8-methoxyquercetin (2), pigenin (3), luteolin (4), quercetin (5), 3,5,7-trihydroxychromone (6), p-hydroxybenzaldehyde (7), beta-sitosterol (8).
  
  
  CONCLUSIONS
  All compounds were isolated from this plant for the first time, compounds 5- 8 were isolated from the genus Polygonum for the first time.
authors.affiliation: Department of Phamacognosy, China Pharmaceutical University, Nanjing 210038, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Lin
authors.forename: Chaofeng
authors.initials: C
authors.lastname: Zhang
authors.forename: Mian
authors.initials: M
authors.lastname: Zhang
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification; D028502:Polygonum / Q000737:chemistry*
chemical_list: D004365:Drugs, Chinese Herbal