Pyrimidine compound

A compound of formula (I), or a salt thereof:

• wherein
• R1 is lower alkyl, C3-6 cycloalkyl, or halogeno-lower alkyl;
• R2 is —C(O)R20;
• W is —NH—;
• R3 is C7-10 cycloalkyl which optionally has 1 to 5 substituents selected from the group consisting of lower alkyl, halogen, and —OH, on the ring;
• each R0 is the same as or different from each other, each representing H or lower alkyl;
• R20 is a nitrogen-containing saturated hetero ring group which optionally has 1 to 5 substituents selected from Group G2;
• Group G2 is lower alkyl, halogen, halogeno-lower alkyl, —C(O)OR0, —C(O)N(R0)2, —CN, —X—OR0, —O-lower alkylene-OR0, —O-halogeno-lower alkyl, —OC(O)-lower alkyl, —X—N(R0)2, oxo, —X—C3-6 cycloalkyl, —X—O—X—C3-6 cycloalkyl, —X-phenyl, or —X-morpholinyl;
• each X is the same as or different from each other, each representing a bond or lower alkylene.