Microwave-assisted synthesis and evaluation of anti-inflammatory activity of new series of N-substituted 2-butyl-5-chloro-3H-imidazole-4-carbaldehyde derivatives

A series of N-substituted 2-butyl-5-chloro-3H-imidazole-4-carbaldehyde derivatives bearing potentially bioactive substituents were synthesized by microwave irradiation method in good yield compared with conventional method. The synthesized compounds were screened for their anti-inflammatory activity and were compared with a standard drug. The compounds demonstrated potent to weak anti-inflammatory activity. Of the compounds studied, compounds 6i and 6d showed potent activity comparable to the standard drug ibuprofen at the same dose in carrageenan-induced paw edema in rat model.