title: [Studies on chemical constituents from branch of Trema angustifolia].
abstract: OBJECTIVE
  To study the chemical constituents from the branch of Trema angustifolia.
  
  
  METHODS
  The compounds were isolated by silica gel column chromatography, and their structures were elucidated by means of spectral analysis.
  
  
  RESULTS
  Six compounds were identified as beta-sitosterol (I), viminalol (II), acetylursolic acid (III), oleanolic acid (IV), paprazine (V), moupinamide (VI).
  
  
  CONCLUSIONS
  All the compounds were isolated from this plant for the first time.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Li
authors.forename: Cheng
authors.initials: C
authors.lastname: Qiu
authors.forename: Dong-ming
authors.initials: DM
authors.lastname: Zhang
authors.forename: Yi
authors.initials: Y
authors.lastname: Di
mesh_terms: D002850:Chromatography, Gel; D003373:Coumaric Acids / Q000737:chemistry / Q000302:isolation & purification*; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification; D034402:Trema / Q000737:chemistry*; D014439:Tyramine / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D003373:Coumaric Acids; D012855:Sitosterols; C025473:gamma-sitosterol; C074004:feruloyltyramine; D009828:Oleanolic Acid; D014439:Tyramine