title: [Studies on chemical constitutents from Penthorum chinense Pursh].
abstract: OBJECTIVE
  To study the chemical constituents of Penthorum chinense.
  
  
  METHODS
  Silica gel and macroporous resin were used as adsorbent for isolation and purification. The chemical structures were elucidated by spectral analysis and chemical methods.
  
  
  RESULTS
  Three compounds were isolated from the water-extract of P. chinense. The structures were identified as 5-hydroxy-flavanone-7-O-beta-D-glucoside (I), 2,4,6-trihydroxybenzoic acid (II) and quercetin(III), respectively.
  
  
  CONCLUSIONS
  Compounds I and II were isolated from this plant for the first time.
authors.affiliation: Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medicine, Beijing 100700, China.
authors.forename: H
authors.initials: H
authors.lastname: Feng
authors.forename: Z M
authors.initials: ZM
authors.lastname: Wang
authors.forename: G Y
authors.initials: GY
authors.lastname: Dong
authors.forename: Z
authors.initials: Z
authors.lastname: Wu
mesh_terms: D044950:Flavanones; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification; D062385:Hydroxybenzoates / Q000737:chemistry / Q000302:isolation & purification; D019684:Magnoliopsida / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification
chemical_list: C470930:5-hydroxyflavanone-7-O-glucoside; D044950:Flavanones; D005419:Flavonoids; D005960:Glucosides; D062385:Hydroxybenzoates; C470931:2,4,6-trihydroxybenzoic acid; D011794:Quercetin