2-Amino-5-thiazolyl motif: A novel scaffold for designing anti-inflammatory agents of diverse structures
作者:P.X. Franklin、Ajay D. Pillai、Parendu D. Rathod、Swapnil Yerande、Manish Nivsarkar、Harish Padh、Kamala K. Vasu、V. Sudarsanam
DOI:10.1016/j.ejmech.2007.02.008
日期:2008.1
Substituted thiazoles with different structural features were synthesized and screened for their anti-inflammatory activity in acute carrageenin induced rat paw edema model and chronic formalin induced rat paw edema model. The compounds 1-5 showed 83, 30, 63, 69 and 73% protection, respectively, in acute carrageenin induced rat paw edema model. In 5-day chronic formalin induced rat paw edema model on the fifth day 1 and 5 gave 66 and 41% protection. Both studies were carried out at a dose of 100 mg/kg body weight. The activity was compared with that of Ibuprofen, Rofecoxib, and Dexamethasone both in acute and chronic anti-inflammatory models. Compound 1 without COX-1 and COX-2 inhibitory activity showed good activity profile almost mimicking the gold standard Dexamethasone in terms of efficacy. A 7-day study in rats at dose of 100 mg/kg showed that this compound does not have any ulcerogenic activity and toxicity. The activity of 5 shows that incorporating two pharmacophoric features in one molecule can be a good drug designing strategy. 2,4-Diaminothiazoles with an aliphatic oxime esters attached via a ketone bridge to the 5th position of thiazole was identified as a novel scaffold for designing anti-inflammatory agents. (C) 2007 Elsevier Masson SAS. All rights reserved.