5-CHLORO-6-PHENYL-2-(4-TRIFLUOROMETHYLPHENYL)-4-PYRIMIDINYLAMINO ACETAMIDE DERIVATIVES, PROCESS FOR PRODUCING THE SAME, MEDICINAL COMPOSITIONS CONTAINING THE SAME AND INTERMEDIATE OF THESE COMPOUNDS

摘要

A Ä5-chloro-6-phenyl-2-(4-trifluoromethylphenyl)-4-pyrimidinylaminoÜacet amide derivative of the formula (I): <CHEM> wherein R<1> is a methyl group or a cyclopropyl group, and a pharmaceutical composition containing the same. Said compounds exhibit a potent anti-rheumatoid activity and show low toxicity, and hence, they are useful as an agent for prophylaxis or treatment of immuno inflammatory diseases such as rheumatoid diseases (e.g., rheumatoid arthritis, Behçet disease, ankylosing spondylitis, etc.) and autoimmune diseases (e.g., multiple sclerosis, systemic lupus erythematosus, Sj¦gren syndrome, etc.).