title: [Studies on chemical constituents of Pinus armandii].
abstract: OBJECTIVE
  To study chemical constituents from pine cone of Pinus armandii Franch.
  
  
  METHODS
  The constituents were isolated by chromatographic method and the structures were identified on the basis of spectral analysis.
  
  
  RESULTS
  Four compounds were identified as 7-oxo-12alpha, 13beta-dihydroxyabiet-8(14)-en18-oic acid (I), 7-oxo-13beta-hydroxyabiet-8 (14)-en-18-oic acid (II), 8 (14)-podocarpen-13-on-18-oic acid (III) and lambertianic acid (IV).
  
  
  CONCLUSIONS
  Compound I is a new diterpenoid and compounds II, III were isolated from this plant for the first time.
authors.affiliation: School of Bioengineering, Southern Yangtze University, Wuxi 214036, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Yang
authors.forename: Yi
authors.initials: Y
authors.lastname: Ding
authors.forename: Zhi-hao
authors.initials: ZH
authors.lastname: Sun
authors.forename: Dong-ming
authors.initials: DM
authors.lastname: Zhang
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry / Q000302:isolation & purification; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D005638:Fruit / Q000737:chemistry; D008968:Molecular Conformation; D009281:Naphthalenes / Q000737:chemistry / Q000302:isolation & purification; D028223:Pinus / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: C514829:7-oxo-12alpha,13beta-dihydroxyabiet-8(14)-en18-oic acid; C514830:7-oxo-13beta-hydroxyabiet-8(14)-en-18-oic acid; D002264:Carboxylic Acids; D004224:Diterpenes; D009281:Naphthalenes; C421442:lambertianic acid