Heterocyclic compounds useful as inhibitors of tyrosine kinases

A compound of formula (I): ** (Formula) ** wherein: Ar1 is a carbocyclic, heteroaryl or heterocyclic aromatic or nonaromatic; wherein said carbocyclic, heteroaryl or heterocyclic group is optionally substituted by one or more of the R1, R2 groups, and R3; X is NH, N-C1-3 alkyl, N-cyclopropyl, S atom or O atom; Y is a NR15 group, an S atom or an O atom; Ra is a át omo H, C1-10 alkyl group, C2-10 alkenyl group or C2-10 alkynyl group, each of which may be branched or cyclic; or Ra is a group aryl or heteroaryl; wherein each Ra is independently optionally substituted with one or more C1-6 alkyl groups, C1-6 alkoxy, halogen, OH, oxo, NR10R11, aryl or heteroaryl, each aryl or heteroaryl being optionally substituted with one or more groups selected from halogen, OH, C1-3 alkyl, C1-3 alkoxy, hydroxy-C1-3 alkyl, and (CH2) mNR10R11; and wherein Ra is attached wing position 4 or 5; R1 and R2 are the same or different and are selected from an H atom, a halogen atom, CN group, a NO2 group, a C1-10 alkyl group, branched or unbranched, saturated or unsaturated alkoxy group C1-10, branched or unbranched, C1-10 acyl group, branched or unbranched, C1-10 acyloxy group, branched or unbranched alkyl group branched or unbranched C1-10-thio, an aminosulfonyl group, a C1-3 dialkyl-aminosulfonyl group, one NR10R11 group, an aryl group, an aroyl group, an aryloxy group, an arylsulfonyl group, a heteroaryl group and a heteroaryloxy group; in which the R1 and R2 groups are optionally partially above or fully halogenated or optionally substituted with one to three groups independently selected from oxo, OH, NR10R11, C1-6 alkyl branched or unbranched, C3-7 cycloalkyl , phenyl, naphthyl, heteroaryl, aminocarbonyl and mono- or dialkyl-aminocarbonyl C1-3; R3 is a hydrogen atom, a halogen atom, an OH group, a group (CH2) nNR10R11 a CONR10R11 group, (CH2) nCO2R12; C1-3 alkyl group optionally substituted with an OH group, a C1-3 alkoxy group optionally halogenated or a group C1-3 alkyl-thio; R4 and R5 together with the atoms to which they are attached complete a fused ring system of the formulas A or B: ** (Formula) ** R6 is a C1-3 alkyl group or H atom; R7 is a C1-6 alkyl group branched or unbranched, or an atom H.