Patent ID: 8450341

Claim:
A compound of formula (I) wherein: R 1 is chosen from a hydrogen atom, C 3-6 cycloalkyl groups, C 3-6 cycloalkyl-C 1-2 alkylene groups, and C 5-10 aryl-C 1-2 alkylene groups, wherein the cycloalkyl groups and aryl groups are optionally substituted by 1 or 2 substituents chosen from linear C 1-4 alkyl groups, branched C 1-4 alkyl groups, and C 1-4 alkoxy groups; R 2 is chosen from a hydrogen atom and a methyl group; R 3 is chosen from a hydrogen atom and halogen atoms; R 4 and R 5 each independently is chosen from C 1-3 alkyl groups, or R 4 and R 5 form together with the carbon atom to which they are attached a cyclic group of formula wherein n and m each independently is an integer chosen from 1 and 2, and G 5 is chosen from —O— and —C(R 7 R 8 )—, wherein: R 7 is chosen from a hydrogen atom, halogen atoms, a hydroxyl group, morpholine groups, and morpholino-ethoxy groups; R 8 is chosen from a hydrogen atom, halogen atoms, and C 1-4 alkyl groups; G 1 is chosen from a nitrogen atom and —CH═; G 2 is chosen from a nitrogen atom and an aromatic carbon atom; and G 3 is chosen from a nitrogen atom and an oxygen atom; or a pharmaceutically acceptable salt or an N-oxide thereof.