Synthesis, characterization of benzimidazole carboxamide derivatives as potent anaplastic lymphoma kinase inhibitor and antioxidant activity

Novel benzimidazole carboxamide derivatives have been synthesized and characterized by FTIR, NMR, and mass spectral analysis. The synthesized compounds 7a, 7d, and 7f showed excellent scavenging capacity against DPPH radical and the results are comparable with ascorbic acid. In-silico molecular docking studies exhibited compounds 7a, 7d, and 7f had a good affinity towards the active pocket and the results indicated the ability of potent and selective inhibition of anaplastic lymphoma kinase (ALK) receptor. The theoretical investigation of MEPs, HOMO, LUMO, and the energy gap of HOMO-LUMO were calculated by B3LYP/6-31G method and reactivity descriptors were also computed.