Design, synthesis and biological evaluation of novel (E)-α-benzylsulfonyl chalcone derivatives as potential BRAF inhibitors

European Journal of Medicinal Chemistry
2012.0

Abstract

Activating mutations in the BRAF serine/threonine kinase are found in more than 70% of human melanomas, >90% of which are BRAF(V600E). It provides new therapeutic opportunities in malignant melanoma. In silico and in vitro screening of our compound collection has identified Hit 2 as BRAF(V600E) inhibitor. Based on its structure, a series of novel (E)-α-benzylsulfonyl chalcone derivatives (13-40) were designed and synthesized. Compound 38 exhibited the most potent inhibitory activity with an IC(50) value of 0.17 μM for BRAF(V600E) and GI(50) value of 0.52 μM for mutant BRAF-dependent cells. The results of cell based pERK activity and cellular selectivity suggested that those compounds could selectively inhibit proliferation of mutant BRAF-dependent melanoma cell line through inhibition of oncogenic BRAF.

DOI： 10.1016/j.ejmech.2012.02.007

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