title: Benzophenanthridine alkaloids from Corydalis flabellata.
abstract: Four new alkaloids, characterized as 6-(2-hydroxyethyl)-5,6-dihydrosanguinarine (1), 6-acetonyl-5,6-dihydrosanguinarine (2), N-methyl-2,3,7,8-tetramethoxy-5,6-dihydrobenzophenanthridine-6-ethanoic acid (3), N-methyl-2,3,7,8-tetramethoxy-6-oxo-5,6-dihydrobenzophenanthridine (4), together with oxosanguinarine (5), spallidamine (6), 6-acetonyl-5,6-dihydrochelerythrine (7), 6-oxochelerythrine (8) and sanguidimerine (9) were isolated from the roots of Corydalis flabellata.
authors.affiliation: Department of Chemistry, University of Jammu, Ambedkar Road, Jammu, India.
authors.forename: Summon
authors.initials: S
authors.lastname: Koul
authors.forename: T K
authors.initials: TK
authors.lastname: Razdan
authors.forename: C S
authors.initials: CS
authors.lastname: Andotra
authors.forename: A K
authors.initials: AK
authors.lastname: Kalla
authors.forename: S
authors.initials: S
authors.lastname: Koul
authors.forename: S C
authors.initials: SC
authors.lastname: Taneja
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D028101:Papaveraceae; D010617:Phenanthridines / Q000737:chemistry* / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry*
chemical_list: D000470:Alkaloids; D010617:Phenanthridines