title: [Alkaloids from Macleaya cordata].
abstract: OBJECTIVE
  To study the alkaloids of Macleaya cordata.
  
  
  METHODS
  The alkaloids were isolated and purified by various column chromatography as well as recrystallization. Their structures were identified by physico-chemical properties and spectral analysis.
  
  
  RESULTS
  Thirteen alkaloids were isolated and identified as 6-methoxy-dihydrosanguinarine (1), norsanguinarine (2), 6-acetonyl-dihyrochelerythrine (3), 6-acetonyl-dihyrosanguinnarine (4), sanguidimerine (5), chelidimerine (6), (+/-) -bocconarborine A (7), (+/-)-bocconarborine B (8), cryptopine (9), dihydrosanguinarine (10), dihydrochelerythrine (11), protopine (12), alpha-allocryptopine (13).
  
  
  CONCLUSIONS
  Compounds 2, 3, 5 - 9 were firstly isolated from the genus Macleaya and compound 1 was obtained from M. cordata for the first time.
authors.affiliation: Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China.
authors.forename: Fengzhi
authors.initials: F
authors.lastname: Ye
authors.forename: Feng
authors.initials: F
authors.lastname: Feng
authors.forename: Wenyuan
authors.initials: W
authors.lastname: Liu
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D028101:Papaveraceae / Q000737:chemistry*
chemical_list: D000470:Alkaloids; D004365:Drugs, Chinese Herbal