title: Flavones and isoflavones from the west African Fabaceae Erythrina vogelii.
abstract: The CH(2)Cl(2)/MeOH extract of the stem bark of Erythrina vogelii (Fabaceae) from Nigeria has yielded two novel isoflavones, 7,4'-dihydroxy-8-(gamma,gamma-dimethylallyl)-2''zeta-(4''-hydroxyisopropyl)dihydrofurano[1'',3'':5,6]isoflavone (vogelin H) (1) and 7,4'-dihydroxy-8-[(2'''zeta,3'''-dihydroxy-3'''-methyl)butyl]-2'',2''-dimethyl-3'',4''-dehydropyrano[1'',4'':5,6]isoflavone (vogelin I) (2), a novel flavone, 7,4'-dihydroxy-2'',2''-dimethyl-3'',4''-dehydropyrano[1'',4'':5,6]flavone (vogelin J) (3), and eight known flavonoids.
authors.affiliation: Natural Products Research Group, School of Chemistry, University of KwaZulu-Natal, Howard College Campus, 4041 Durban, South Africa.
authors.forename: Alain F
authors.initials: AF
authors.lastname: Kamdem Waffo
authors.forename: Philip H
authors.initials: PH
authors.lastname: Coombes
authors.forename: Dulcie A
authors.initials: DA
authors.lastname: Mulholland
authors.forename: Augustin E
authors.initials: AE
authors.lastname: Nkengfack
authors.forename: Zacharias T
authors.initials: ZT
authors.lastname: Fomum
mesh_terms: D004895:Erythrina / Q000737:chemistry*; D047309:Flavones / Q000737:chemistry* / Q000302:isolation & purification; D007529:Isoflavones / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D009549:Nigeria; D024301:Plant Bark / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry
chemical_list: D047309:Flavones; D007529:Isoflavones; C510929:vogelin H; C510930:vogelin I