Abstract
A series of ethyl-4-(4-((substituted benzyl)amino)piperidin-1-yl)-2-(phenyl/pyridyl)thiazole-5-carboxylates was designed by molecular hybridization and synthesized from aryl thioamides in five steps. The compounds were evaluated for their in vitro Mycobacterium smegmatis (MS) GyrB ATPase assay, Mycobacterium tuberculosis (MTB) DNA gyrase super coiling assay, antituberculosis activity and cytotoxicity. Among the twenty four compounds studied, ethyl-4-(4-((4-fluorobenzyl)amino)piperidin-1-yl)-2-phenylthiazole-5-carboxylate (14) was found to be the promising compound which showed activity against all test with MS GyrB IC50 of 24.0 ± 2.1 μM, 79% inhibition of MTB DNA gyrase at 50 μM, MTB MIC of 28.44 μM, and not cytotoxic at 50 μM.
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