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

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

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.

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Bibliographic Details
Main Authors: Bandeira,Paulo N, Farias,Silvana S. de, Lemos,Telma L. G, Braz-Filho,Raimundo, Santos,Hélcio S, Albuquerque,Maria R. J. R, Costa,Sônia M. O
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2011
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532011000200025
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