title: A new benzylisoquinoline alkaloid from Argemone mexicana.
abstract: A new benzylisoquinoline alkaloid, argemexirine, together with two known protoberberine alkaloids, dl-tetrahydrocoptisine and dihydrocoptisine, have been isolated from the methanolic extract of the whole plant of Argemone mexicana L. The compounds were identified by spectral and chemical evidence. This is the first report of these alkaloids in this plant species.
authors.affiliation: Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi - 221005, UP, India.
authors.forename: Sarita
authors.initials: S
authors.lastname: Singh
authors.forename: T D
authors.initials: TD
authors.lastname: Singh
authors.forename: V P
authors.initials: VP
authors.lastname: Singh
authors.forename: V B
authors.initials: VB
authors.lastname: Pandey
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D031674:Argemone / Q000737:chemistry*; D001599:Berberine / Q000031:analogs & derivatives / Q000737:chemistry; D007546:Isoquinolines / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D000432:Methanol; D008745:Methylation; D010936:Plant Extracts / Q000032:analysis; D012997:Solvents; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000470:Alkaloids; D007546:Isoquinolines; D010936:Plant Extracts; D012997:Solvents; C547270:argemexirine; D001599:Berberine; D000432:Methanol