title: [Studies on the alkaloids from the herb of Corydalis adunca].
abstract: OBJECTIVE
  To study the alkaloid constituents of Corydalis adunca.
  
  
  METHODS
  The constituents were isolated on silica gel column and their structures were elucidated by IR, NMR, MS data.
  
  
  RESULTS
  Eight alkaloid compounds were isolated from alcohol extracts of the herb of C. adunca, and identified as dihydrosanguinarine (I), tetrahydrocolumbamine (II), 1,2,3,4-tetrahydro-7-methoxy-1-[(4-methoxy)phenyl]methyl-8-quinolinol (III), protopine (IV) and 6-acetonyl-5,6-dihydrosanguinarine (V).
  
  
  CONCLUSIONS
  Five compounds were isolated from C. adunca for the first time.
authors.affiliation: Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
authors.forename: Yan-li
authors.initials: YL
authors.lastname: Tang
authors.forename: Ai-mei
authors.initials: AM
authors.lastname: Yang
authors.forename: Ying-shan
authors.initials: YS
authors.lastname: Zhang
authors.forename: Han-qing
authors.initials: HQ
authors.lastname: Wang
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D053119:Benzophenanthridines; D001600:Berberine Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D031311:Corydalis / Q000737:chemistry*; D007546:Isoquinolines; D015394:Molecular Structure; D010617:Phenanthridines / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D000470:Alkaloids; D053119:Benzophenanthridines; D001600:Berberine Alkaloids; D007546:Isoquinolines; D010617:Phenanthridines; C501843:dihydrosanguinarine; C092892:tetrahydrocolumbamine; C009093:protopine