title: Geranylated phenolic constituents from the fruits of Artocarpus nobilis.
abstract: Chemical investigation of the combined dichloromethane and ethyl acetate extracts of the fruits of Artocarpus nobilis, furnished four new geranylated phenolic constituents, 2,4,4'-trihydroxy-3-[(2E)-5-methoxy-3,7-dimethylocta-2,6-dienyl]chalcone (4), 1-(3,4-dihydro-3,5-dihydroxy-2-methyl-2-(3-methyl-2-butenyl)-2H-1-benzopyran-6-yl-3-(4-hydroxyphenyl)-2(E)-propen-1-one (5), 8-geranyl-3',4',7-trihydroxyflavone (8), 3'-geranyl-4',5,7-trihydroxyflavanone (9), together with known related compounds, xanthoangelol (1), xanthoangelol B (2), 3-geranyl-2,3',4,4'-tetrahydroxychalcone (3), lespeol (6), 8-geranyl-4',7-dihydroxyflavanone (7), and isonymphaeol-B (10). Compounds 3, 8 and 10 showed strong antioxidant activity against DPPH radical by spectrophotometric method.
authors.affiliation: Institute of Fundamental Studies, Hantana Road, Kandy, Sri Lanka. lalith@ifs.ac.lk
authors.forename: Lalith
authors.initials: L
authors.lastname: Jayasinghe
authors.forename: G Kalinga
authors.initials: GK
authors.lastname: Rupasinghe
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Hara
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Fujimoto
mesh_terms: D031622:Artocarpus / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry*; D013729:Terpenes / Q000737:chemistry*
chemical_list: D010636:Phenols; D013729:Terpenes