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Paper | Regular issue | Vol 83, No. 9, 2011, pp.2079-2089
Published online, 7th July, 2011
DOI: 10.3987/COM-11-12275
Biflavonoids from Flowers of Butea monosperma (Lam.) Taub.

Fakhruddin Ali Ahmed, Sang-Yong Kim, Shin-ichiro Kurimoto, Hisako Sasaki, Hirofumi Shibata, Yoshiki Kashiwada,* and Yoshihisa Takaishi

*Graduate School of Pharmaceutical Sciences, University of Tokushima, Sho-machi, Tokushima 770-8505, Japan


A new aurone glucoside (1) and three new biflavonoids (12 - 14), together with fourteen known compounds, were isolated from the flowers of Butea monosperma (Lam.) Taub. The structures of the new compounds were established by 1D, 2D NMR, MS and CD analyses. The isolated compounds were evaluated for their influenza A neuraminidase inhibitory activity and DPPH free-radical scavenging activity.