Pyrimidine compound and medicinal composition thereof

A compound represented by the following formula (I), a salt thereof or a solvate thereof:

• in the formula, R1 and R2 are the same as or different from each other and each represents a hydrogen atom, an alkyl group having one to six carbon atoms which may be substituted, an alkenyl group having two to six carbon atoms which may be substituted, an alkynyl group having two to six carbon atoms which may be substituted, a cycloalkyl group having three to eight carbon atoms which may be substituted, a cycloalkenyl group having three to eight carbon atoms which may be substituted, an aromatic hydrocarbon cyclic group having six to fourteen carbon atoms which may be substituted, an acyl group having one to six carbon atoms which may be substituted or an alkylsulfonyl group having one to six carbon atoms which may be substituted;
• R3 represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group having one to six carbon atoms which may be substituted, an alkenyl group having two to six carbon atoms which may be substituted, an alkynyl group having two to six carbon atoms which may be substituted, an aromatic hydrocarbon cyclic group having six to fourteen carbon atoms which may be substituted, a nitrogen atom which may be substituted, an oxygen atom which may be substituted or a sulfur atom which may be substituted;
• R4 is a group represented by the formula (V):
• wherein R8 represents a group selected from the following substituent group a;
• and the ring B may be substituted with one to four groups selected from the following substituent group a:
• Substituent group a
• the group consisting of a hydrogen atom, a halogen atom, a hydroxyl group, a nitro group, a cyano group, an alkyl group having one to six carbon atoms which may be substituted, an alkenyl group having two to six carbon atoms which may be substituted, an alkynyl group having two to six carbon atoms which may be substituted, an alkoxy group having one to six carbon atoms which may be substituted, an alkenyloxy group having two to six carbon atoms which may be substituted, an alkynyloxy group having two to six carbon atoms which may be substituted, an alkylthio group having one to six carbon atoms which may be substituted, an alkenylthio group having two to six carbon atoms which may be substituted, an alkynylthio group having two to six carbon atoms which may be substituted, an aliphatic acyl group having two to seven carbon atoms, a carbamoyl group which may be substituted, an arylacyl group, an amino group which may be substituted, an alkylsulfonyl group having one to six carbon atoms which may be substituted, an alkenylsulfonyl group having two to six carbon atoms which may be substituted, an alkynylsulfonyl group having two to six carbon atoms which may be substituted, an alkylsulfinyl group having one to six carbon atoms which may be substituted, an alkenylsulfinyl group having two to six carbon atoms which may be substituted, an alkynylsulfinyl group having two to six carbon atoms which may be substituted, a formyl group, a cycloalkyl group having three to eight carbon atoms which may be substituted, a cycloalkenyl group having three to eight carbon atoms which may be substituted, and an aromatic hydrocarbon cyclic group having six to fourteen carbon atoms which may be substituted;
• and R5 represents an aromatic hydrocarbon cyclic group having six to fourteen carbon atoms which may be substituted or furyl which may be substituted.