Patent ID: 7501424

Claim:
N-phenyl-2-pyrimidine-amine compound represented by the following formula (1): or its salt, in which R 1 represents optionally substituted thiazole, imidazole or pyrazine (wherein the substituent is amino group or lower alkyl); R 2 , R 3 and R 6 each independently represent hydrogen, halogen, lower alkyl or lower alkoxy; R 4 and R 5 each independently represent hydrogen and R 4 and R 5 are not simultaneously hydrogen; or R 4 or R 5 each represents a radical having the following formula (2): wherein R 7 represents lower alkyl or lower alkyl substituted with 1 to 3 halogen, R 8 represents aliphatic having 5 to 10 carbon atoms, or represents optionally substituted 5 to 7 membered saturated or unsaturated monocyclic radical (wherein the substituent is lower alkyl), or bi- or tri-cyclic radical optionally combined with a benzene ring(s), each of which has 1 to 3 hetero atoms selected from a group consisting of nitrogen, oxygen and sulfur, or represents piperazinyl or homopiperazinyl each of which is substituted by lower alkyl.