title: Four new prenylated flavonoids and xanthones from the root bark of Artocarpus nobilis.
abstract: Chemical investigation of the n-butanol extract from the methanol extract of the root bark of Artocarpus nobilis furnished four new prenylated flavonoids together with artonin E 2'-methylether (4), isoartonin E 2'-methylether (5), dihydroisoartonin E 2'-methylether (6), artonin V 2'-methylether (7), artobiloxanthone (1), artonin E (2) and cycloartobiloxanthone (3). All these compounds showed strong radical scavenging properties towards DPPH radical.
authors.affiliation: Institute of Fundamental Studies, Hantana Road, Kandy, Sri Lanka. lalith@ifs.ac.lk, ulbj2003@yahoo.com
authors.forename: U L B
authors.initials: UL
authors.lastname: Jayasinghe
authors.forename: T B
authors.initials: TB
authors.lastname: Samarakoon
authors.forename: B M M
authors.initials: BM
authors.lastname: Kumarihamy
authors.forename: N
authors.initials: N
authors.lastname: Hara
authors.forename: Y
authors.initials: Y
authors.lastname: Fujimoto
mesh_terms: D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D031622:Artocarpus / Q000737:chemistry*; D001713:Biphenyl Compounds; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006834:Hydrazines; D015394:Molecular Structure; D010851:Picrates; D024301:Plant Bark; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D018517:Plant Roots
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D005419:Flavonoids; D016166:Free Radical Scavengers; D006834:Hydrazines; D010851:Picrates; D010936:Plant Extracts; C066727:artonin E; C004931:1,1-diphenyl-2-picrylhydrazyl