Synthesis and Biological Evaluation of Novel N' (4-aryloxybenzylidene)- 1H-Benzimidazole-2 Carbohydrazide Derivatives as Anti-Tubercular Agents

A series of structurally novel, (E)-N'-(4-aryloxybenzylidene)-1H-benzimidazole-2-carbohydrazide derivatives were synthesized by molecular hybridization technique. All these compounds were evaluated against Mycobacterium tuberculosis H37Rv strains using Resazurin Microtiter assay (REMA) method. These compounds showed good antituberculosis activity with minimum inhibitory concentration (MIC) value of the range of 1.5-25 µg/mL. Keywords: Anti-tubercular, benzimidazole, carbohydrazide esters, triclosan, molecular hybridization.