title: [Studies on chemical constituents in bark of Larix olgensis var. koreana].
abstract: OBJECTIVE
  To study the chemical constituents in bark of Larix olgensis var. koreana.
  
  
  METHODS
  The compounds were isolated with silica gel column chromatography and their structures were elucidated on the basis of spectral analysis (IR, EI-MS, 1H-NMR, 13C-NMR).
  
  
  RESULTS
  Eight compounds were isolated and identified as isopimaric acid (I), beta-sitosterol (II), 24R,5alpha-stigmast-3,6-dione (III), larixol (IV), ferulic acid (V), lariciresinol (VI), secroisolariciresinol (VII) and isolariciresinol (VIII).
  
  
  CONCLUSIONS
  All the compounds were isolated from this plant for the first time.
authors.affiliation: College of Pharmacy, Second Military Medical University, Shanghai 200433, China.
authors.forename: Bao-hua
authors.initials: BH
authors.lastname: Yang
authors.forename: Wei-dong
authors.initials: WD
authors.lastname: Zhang
authors.forename: Zheng-bing
authors.initials: ZB
authors.lastname: Gu
authors.forename: Ting-zhao
authors.initials: TZ
authors.lastname: Li
authors.forename: Chuang
authors.initials: C
authors.lastname: Zhang
authors.forename: Yun
authors.initials: Y
authors.lastname: Zhou
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry / Q000302:isolation & purification*; D005663:Furans / Q000737:chemistry / Q000302:isolation & purification*; D028221:Larix / Q000737:chemistry*; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification*; D010616:Phenanthrenes / Q000737:chemistry / Q000302:isolation & purification*; D024301:Plant Bark / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D002264:Carboxylic Acids; D005663:Furans; D017705:Lignans; D010616:Phenanthrenes; D012855:Sitosterols; C115138:isopimaric acid; C025473:gamma-sitosterol; C060282:lariciresinol