title: Prenylated flavonoids of Erythrina lysistemon grown in Egypt.
abstract: Three prenylated flavonoid derivatives; 5,7,4'-trihydroxy-8-(3"'-methylbut-2"'-enyl)-6-(2"-hydroxy-3"-methylbut-3"enyl) isoflavone (isoerysenegalensein E), 5,7,2'-trihydroxy-4'-methoxy-5'-(3"-methylbut-2"-enyl) isoflavanone (lysisteisoflavanone), 5, 4'-dihydroxy-6-(3"'-methylbut-2"'-enyl)-2"-hydroxyisopropyl dihydrofurano [4",5":8,7] isoflavone (isosenegalensin), together with the four known flavonoids abyssinone V-4'-methylether, alpinumisoflavone, wighteone and burttinone were isolated from the stem bark of Erythrina lysistemon Hutch. (Leguminosae). Structures were elucidated by spectroscopic methods.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, University of Alexandria, Alexandria 21215 Egypt. elmasrys@hotmail.com
authors.forename: Sawsan
authors.initials: S
authors.lastname: el-Masry
authors.forename: Masouda E
authors.initials: ME
authors.lastname: Amer
authors.forename: Maged S
authors.initials: MS
authors.lastname: Abdel-Kader
authors.forename: Hala H
authors.initials: HH
authors.lastname: Zaatout
mesh_terms: D004534:Egypt; D007887:Fabaceae / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005419:Flavonoids