title: Two prenylated flavonoids from the stem bark of Erythrina burttii.
abstract: From the stem bark of Erythrina burttii, a new isoflavone, 5,2',4'-trihydroxy-7-methoxy-6-(3-methylbut-2-enyl)isoflavone (trivial name, 7-O-methylluteone) and a new flavanone, 5,7-dihydroxy-4'-methoxy-3'-(3-methylbutadienyl)-5'-(3-methylbut-2-enyl)flavanone (trivial name, burttinonedehydrate) along with three known isoflavonoids (8-prenylluteone, 3-O-methylcalopocarpin and genistein) were isolated. The structures were determined on the basis of spectroscopic evidence.
authors.affiliation: Department of Chemistry, University of Nairobi, PO Box 30197, Nairobi, Kenya. ayenesew@uonbi.ac.ke
authors.forename: Abiy
authors.initials: A
authors.lastname: Yenesew
authors.forename: Beatrice
authors.initials: B
authors.lastname: Irungu
authors.forename: Solomon
authors.initials: S
authors.lastname: Derese
authors.forename: Jacob O
authors.initials: JO
authors.lastname: Midiwo
authors.forename: Matthias
authors.initials: M
authors.lastname: Heydenreich
authors.forename: Martin G
authors.initials: MG
authors.lastname: Peter
mesh_terms: D004895:Erythrina / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D024301:Plant Bark / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005419:Flavonoids