title: Quaternary alkaloids of Argemone mexicana.
abstract: Four quaternary isoquinoline alkaloids, dehydrocorydalmine, jatrorrhizine, columbamine, and oxyberberine, have been isolated from the whole plant of Argemone mexicana Linn. (Papaveraceae) and their structures established by spectral evidence. This is the first report of these alkaloids (dehydrocorydalmine, jatrorrhizine, columbamine, and oxyberberine) from Argemone mexicana and the Argemone genus.
authors.affiliation: Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India.
authors.forename: Sarita
authors.initials: S
authors.lastname: Singh
authors.forename: Tryambak Deo
authors.initials: TD
authors.lastname: Singh
authors.forename: Virendra Pratap
authors.initials: VP
authors.lastname: Singh
authors.forename: Vidya Bhushan
authors.initials: VB
authors.lastname: Pandey
mesh_terms: D000470:Alkaloids / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D031674:Argemone / Q000737:chemistry*; D001600:Berberine Alkaloids / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D007546:Isoquinolines / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D013056:Spectrophotometry, Ultraviolet; D044366:Transition Temperature
chemical_list: D000470:Alkaloids; D001600:Berberine Alkaloids; D007546:Isoquinolines; C007233:dehydrocorydalmine