Synthesis, α-glucosidase inhibitory, cytotoxicity and docking studies of 2-aryl-7-methylbenzimidazoles

• Synthesis of 27 benzimidazole derivatives.
• In-vitro α-glucosidase inhibitory activity.
• Cytotoxicity.
• Docking studies were carried out to confirm binding of active compounds with enzyme.

Benzimidazole analogs 1–27 were synthesized, characterized by EI-MS and 1H NMR and their α-glucosidase inhibitory activities were found out experimentally. Compound 25, 19, 10 and 20 have best inhibitory activities with IC50 values 5.30 ± 0.10, 16.10 ± 0.10, 25.36 ± 0.14 and 29.75 ± 0.19 respectively against α-glucosidase. Compound 6 and 12 has no inhibitory activity against α-glucosidase enzyme among the series. Further studies showed that the compounds are not showing any cytotoxicity effect. The docking studies of the compounds as well as the experimental activities of the compounds correlated well. From the molecular docking studies, it was observed that the top ranked conformation of all the compounds fit well in the active site of the homology model of α-glucosidase.

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