title: [Studies on chemical constituents of Schisandra propinqua (Wall.) Hook. f. et Thoms].
abstract: OBJECTIVE
  To isolate and characterize compounds from the stems of Schisandra propinqua.
  
  
  METHODS
  Extracting with solvent, isolating by column chromatography and identifying by the spectroscopic methods.
  
  
  RESULTS
  Six dibenzocyclooctadiene lignans were isolated and identified as tigloylgomisin P(1), angeloylgomisin O(2), angeloylisogomisin O(3), kadsulignan L(4), (+/-) 5,8-epoxyl-6, 7-dimethyl-2',3',2",3"-dimethylenedioxy-4', 1"-dimethyl-1,2:3,4-dibenzo-1, 3-cyclooctadiene(5) and wuweizisu C(6).
  
  
  CONCLUSIONS
  Compounds 4 and 5 were the first two dibenzocyclooctadiene lignans with an 6,9-epoxy bridge cycle discovered in the genus Schisandra. The others were originally isolated from S. propinqua.
authors.affiliation: Department of Chemistry, Yunnan Normal University, Kunming 650092, Yunnan, China.
authors.forename: Y G
authors.initials: YG
authors.lastname: Chen
authors.forename: G W
authors.initials: GW
authors.lastname: Qin
authors.forename: Y Y
authors.initials: YY
authors.lastname: Xie
mesh_terms: D034242:Cyclooctanes / Q000737:chemistry / Q000302:isolation & purification*; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011083:Polycyclic Compounds / Q000737:chemistry / Q000302:isolation & purification; D032141:Schisandra / Q000737:chemistry*
chemical_list: D034242:Cyclooctanes; D017705:Lignans; D011083:Polycyclic Compounds; C477962:kadsulignan L; C031409:schizandrin C