title: A quinolone alkaloid with antioxidant activity from the aleurone layer of anthocyanin-pigmented rice.
abstract: The aleurone layer of Oryza sativa cv. Heugjinmi yielded a new quinolone alkaloid, 4-carbomethoxy-6-hydroxy-2-quinolone (1), showing moderate antioxidative activity in a 1,1-diphenyl-2-picrylhydrazyl free-radical scavenging assay. Physical and spectroscopic evidence has determined the structure of the compound.
authors.affiliation: Department of Food and Nutrition, Duksung Women's University, Seoul 132-714, Korea. hassok@duksung.ac.kr
authors.forename: H S
authors.initials: HS
authors.lastname: Chung
authors.forename: W S
authors.initials: WS
authors.lastname: Woo
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000872:Anthocyanins / Q000097:blood*; D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D015764:Bepridil / Q000031:analogs & derivatives* / Q000737:chemistry; D001713:Biphenyl Compounds; D002845:Chromatography; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D020128:Inhibitory Concentration 50; D007723:Korea; D013058:Mass Spectrometry; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D012275:Oryza / Q000737:chemistry*; D010851:Picrates; D015363:Quinolones / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: C446499:4-carbomethoxy-6-hydroxy-2-quinolone; D000470:Alkaloids; D000872:Anthocyanins; D000975:Antioxidants; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D010851:Picrates; D015363:Quinolones; D015764:Bepridil; C004931:1,1-diphenyl-2-picrylhydrazyl