This invention relates to a pharmaceutical comprising as an effective ingredient an arylmethylene urea exemplified by the following formula:
or a pharmaceutically acceptable salt thereof. The arylmethylene urea and the pharmaceutically acceptable salts thereof are useful for therapy or prophylaxis of inflammatory bowel disease and overactive bladder.
Microwave-assisted synthesis of N-pyrazole ureas and the p38? inhibitor BIRB 796 for study into accelerated cell ageing
作者:Mark C. Bagley、Terence Davis、Matthew C. Dix、Caroline S. Widdowson、David Kipling
DOI:10.1039/b611493h
日期:——
Microwave irradiation of substituted hydrazines and β-ketoesters gives 5-aminopyrazoles in excellent yield, which can be transformed to the corresponding N-carbonyl derivatives by treatment with an isocyanate or chloroformate. Derivatization of 4-nitronaphth-1-ol using predominantly microwave heating methods and reaction with an N-pyrazole carbamate provides a rapid route to the N-pyrazole urea BIRB 796 in high purity, as a potent and selective inhibitor of p38α mitogen-activated protein kinase for the study of accelerated ageing in Werner syndrome cells.