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The synthesis benzimidazolylpyrano [2, 3-d][1, 3] thiazolocarbonitriles (5a-j) were achieved by cyclocondensation of arylidene amino-benzo [d] imidazole-2-thiols (3a-j) with mercaptoacetic acid followed by cyclization with 2-(phenylmethylene) malononitrile. Further more, the present study aimed at the evaluation of in vitro antiinflammatory activity and antioxidant activity of synthetic compounds. All tested compounds showed appreciable activity against the standard drugs.