New isoflavone derivative and other flavonoids from the resin of Amburana cearensis

• Autor(a) principal: Bandeira,Paulo N
• Data de Publicação: 2011
• Outros Autores: Farias,Silvana S. de, Lemos,Telma L. G, Braz-Filho,Raimundo, Santos,Hélcio S, Albuquerque,Maria R. J. R, Costa,Sônia M. O
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of the Brazilian Chemical Society (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532011000200025
• topic: Amburana cearensis; resin; phytochemical investigation; flavonoids

Phytochemical investigation of the resin of Amburana cearensis A. C. Smith allowed the isolation of a new compound: 3',4'-dimethoxy-1'-(7-methoxy-4-oxo-4H-cromen-3-yl)benzo-2',5'-quinone (1), together with six known compounds identified as: 4,2',4'-trihydroxychalcone (2), 7,8,3',4'-tetramethoxyisoflavone (3), 4,2',4'-trihydroxy-3-methoxychalcone (4), 3,4,5-trimethoxycinnamaldehyde (5), 3',4'-dimethoxy-7-hydroxyisoflavone (6) and 6,7,4'-trimethoxy-3'-hydroxyisoflavone (7). The structures were established from the IR, HR-ESI-MS and NMR spectral data, including 2D-NMR experiments.