title: [Study on chemical constituents of bark of Paeonia suffruticosa].
abstract: OBJECTIVE
  To study the chemical constituents of the bark of Paeonia suffruticosa.
  
  
  METHODS
  The 95% ethanol extract was re-extracted with EtOAc, and then separated and purified by column chromatography using silica gel, Sephadex LH -20 and RP-18 as packing materials. The structures were identified on the basis of spectral analysis and physico-chemical characters.
  
  
  RESULTS
  Six compounds were isolated and identified as (+)-catechin (1), paeonidanin (2), paeoniflorigenone (3), 2, 5-dihydroxy-4-methoxyacetophenone (4), paeonol (5), gallic acid (6).
  
  
  CONCLUSIONS
  The compound 1 was isolsted from the genus Paeonia for the first time. The compounds 2, 3 were isolated from this plant for the first time.
authors.affiliation: Institute of Pharmacology and Toxicology, Academy of Military Medical Science, Beijing 100850, China.
authors.forename: Hong-Yu
authors.initials: HY
authors.lastname: Hu
authors.forename: Yu
authors.initials: Y
authors.lastname: Yang
authors.forename: Neng-Jiang
authors.initials: NJ
authors.lastname: Yu
authors.forename: Yi-Min
authors.initials: YM
authors.lastname: Zhao
mesh_terms: D002392:Catechin / Q000737:chemistry / Q000302:isolation & purification*; D039821:Monoterpenes / Q000737:chemistry / Q000302:isolation & purification*; D029596:Paeonia / Q000737:chemistry*; D024301:Plant Bark / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D039821:Monoterpenes; C042713:paeoniflorigenone; D002392:Catechin