Synthesis and Study of Antitumor Activity of Substituted Imidazolecarboxamides

In view of potential biological activities of small molecule polyamides, we synthesized some novel N-(2-aminoethyl)-1-benzyl-2- (alkylthio)-1H-imidazole-5- carboxamide (7a,b), and N-(2-(1-benzyl-2-(alkylthio) -1H-imidazole- 5-carboxamido) ethyl)-1-benzyl-2- (alkylthio)-1H-imidazole-5-carboxamides (8a,b) as antitumor agents. The antitumor activity of compounds 7a,b and 8a,b was studied at concentrations of 0.01, 0.1 and 1 mg/ml, using the potato disk bioassay technique. Vincristine at 0.25 mg/ml employed as positive control and had -67.24% tumor inhibition. Maximum % inhibition for potato tumors was found to be -75.52 for 7b at 1 mg/ml.