Synthesis and pharmacological evaluation of 5-methyl-2-phenylthiazole-4-substituted heteroazoles as a potential anti-inflammatory and analgesic agents

A series of novel 5-methyl-2-phenylthiazole-4-substituted-heteroazole derivatives (6–15) have been synthesized. The structures of these compounds were established by IR, 1HNMR, Mass spectral data and elemental analyses. Compounds were evaluated for their anti-inflammatory and analgesic activities as well as gastric ulcerogenic effects. Derivatives 9, 10, 14 and 15 exhibited moderate to good anti-inflammatory and analgesic activities in carrageenan-induced rat paw edema and acetic acid-induced writhing in mice respectively, with low ulcerogenicity compared with the standard drug diclofenac sodium.