Identification of apoptosis signal-regulating kinase 1 (ASK1) inhibitors among the derivatives of benzothiazol-2-yl-3-hydroxy-5-phenyl-1,5-dihydro-pyrrol-2-one

Add time:07/13/2019    Source:sciencedirect.com

Apoptosis signal-regulating kinase 1 (ASK1) plays important roles in the pathogenesis of type 1 and type 2 diabetes, autoimmune disorders, cancer and neurodegenerative diseases suggesting that small compounds inhibiting ASK1 could be used for the treatment of these pathologies. We have identified novel chemical class of ASK1 inhibitors, namely benzothiazol-2-yl-3-hydroxy-5-phenyl-1,5-dihydro-pyrrol-2-one, using molecular modeling techniques. It was found that the most active compound 1-(6-fluoro-benzothiazol-2-yl)-3-hydroxy-5-[3-(3-methyl-butoxy)-phenyl]-4-(2-methyl-2,3-dihydro-benzofuran-5-carbonyl)-1,5-dihydro-pyrrol-2-one (BPyO-34) inhibits ASK1 with IC50 of 0.52 μM in vitro in kinase assay. The structure–activity relationships of 34 derivatives of benzothiazol-2-yl-3-hydroxy-5-phenyl-1,5-dihydro-pyrrol-2-one have been studied and binding mode of this chemical class has been proposed.

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