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3-Halo-3-nitro-aza/thioflavanones: DNMT inhibitors with a two-site binding mode in the hDNMT3A catalytic pocket
Alexandra Serhouni1, Francesco Calzaferri1, Yannick Bessina1
1Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS-Université de Montpellier-ENSCM, 1919 route de Mende, 34296 Montpellier cedex 5, France.
Abstract:
Flavonoid derivatives are natural product analogues that have shown great interest for therapeutic applications as modulators of DNA methylation. In this article we report new synthesis pathways to access ten novel flavonoid derivatives (i.e. 3-halo-3-nitro-aza/thioflavanones) to be used as potential DNA methyltransferase inhibitors. These compounds have a micromolar inhibition against human DNA methyltransferase 3A in our in vitro fluorescence-based assay. Importantly, a docking study of representative compounds of this series in the enzyme pocket highlights a mode of interaction in the catalytic pocket of hDNMT3A that has never been described.
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