title: Flavonoids and isoflavonoids from Gynerium sagittatum.
abstract: Four flavonoids namely (2R,3R)-2,3-trans-7,4'-dimethoxydihydroflavonol, (2R,3S,4S)-2,3-trans-3,4-cis-7,4'-dimethoxy-3,4-flavandiol, 6-hydroxy-7,4'-dimethoxyflavone, 6,7,4'-trimethoxyflavone, along with the known isoflavonoids ferreirin, dihydrocajanin, dalbergioidin, dihydrobiochanin A and biochanin A and other 11 known compounds were isolated from the roots of Gynerium sagittatum. The structural characterization of these compounds was carried out via one- and two-dimensional NMR experiments in combination with ESI-MS. Finally a quantitative analysis of the isoflavones of the methanolic extract was performed by LC-ESI-MS. The high quantity of isoflavonoids found in G. sagittatum makes this plant a good natural source of isoflavonoids.
authors: Dipartimento di Scienze Farmaceutiche, Università degli Studi di Salerno, Via Ponte Don Melillo, 84084 Fisciano (SA), Italy.
authors: Angelyne
authors: A
authors: Benavides
authors: Carla
authors: C
authors: Bassarello
authors: Paola
authors: P
authors: Montoro
authors: Wagner
authors: W
authors: Vilegas
authors: Sonia
authors: S
authors: Piacente
authors: Cosimo
authors: C
authors: Pizza
mesh_terms: D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification*; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D006109:Poaceae / Q000737:chemistry*
chemical_list: D005419:Flavonoids