Prenylflavonoids from Flourensia fiebrigii

Three compounds: (2S)-8-(3″-methylbut-2″-enyl)-7,3′,4′-trihydroxyflavanone, (2S)-8-(3″-methyl-4″-hydroxy-but-2″-enyl)-7,3′,4′-trihydroxyflavanone and (2S)-8-(3″-methyl-4″-hydroxy-but-2″-enyl)-5,3′,4′-trihydroxy-7-methoxyflavanone, along with five previously known compounds, were isolated from the aerial parts of Flourensia fiebrigii. Their structures were elucidated by application of various spectroscopic methods, including 1D and 2D NMR techniques. © 2007 Elsevier Ltd. All rights reserved.Fil: Uriburu Monasterio, Maria Laura. Universidad Nacional de Salta; ArgentinaFil: Gil, Roberto Ricardo. University Of Carnegie Mellon; Estados UnidosFil: Sosa, Virginia Estela. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: de la Fuente, Juana Rosa. Universidad Nacional de Salta; Argentin