title: Prenylated isoflavonoids from the root bark of Erythrina vogelii.
abstract: Four new prenylated isoflavonoids, vogelins D-G (1-4), were isolated from the CH2Cl2 extract of Erythrina vogelii root bark in addition to the known compounds isolupalbigenin (5), ficuisoflavone (6), ulexone (7), isochandalon (8), and isoderrone (9). The structures 1-4 were elucidated by spectroscopic and chemical methods. The absolute configuration of compound 1 was determined on the basis of its CD spectrum. Possible biogenetic relationships among the E. vogelii isoflavonoids are briefly discussed.
authors.affiliation: Institut de Pharmacognosie et Phytochimie, Université de Lausanne, BEP, CH-1015 Lausanne, Switzerland.
authors.forename: Emerson F
authors.initials: EF
authors.lastname: Queiroz
authors.forename: Kagoyire K
authors.initials: KK
authors.lastname: Atindehou
authors.forename: Christian
authors.initials: C
authors.lastname: Terreaux
authors.forename: Sandor
authors.initials: S
authors.lastname: Antus
authors.forename: Kurt
authors.initials: K
authors.lastname: Hostettmann
mesh_terms: D000354:Africa, Western; D002855:Chromatography, Thin Layer; D002942:Circular Dichroism; D002963:Cladosporium / Q000187:drug effects; D004895:Erythrina / Q000737:chemistry*; D007529:Isoflavones / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D008968:Molecular Conformation; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D007529:Isoflavones