A compound of general Formula I: ** Formula ** where: R1 is F, CN, COORa1, CONRa2Ra2 ', NRa3CORa3', CONRa4ORa4 ', NRa5CONRa5'Ra5 ", NRa6COORa6', SO2NRa7Ra7 ', NRa8SO2Ra7, , NO2, ORa11, NRa12Ra12 ', a lower alkyl that can be substituted or a heterocyclic group that can be substituted, where: Ra1 Ra3, Ra4, Ra5, Ra6 and Ra8 are each independently a hydrogen atom or lower alkyl that can be substituted; Ra2, Ra2 ', Ra5', Ra5 ", Ra7, Ra7 ', Ra12 and Ra12' are each independently a hydrogen or lower alkyl atom that may be substituted, provided, however, that Ra2 and Ra2 '; Ra5 'and Ra5 "; Ra7 and Ra7'; and Ra12 and Ra12 'each, together with the nitrogen atom to which they are attached, can form a heterocyclic group that may be substituted; Ra3', Ra4 ', Ra6', Ra8 ', Ra9, Ra10 and Ra11 are each independently a hydrogen or lower alkyl atom that may be substituted; R2 is CO, SO2, or CHRx where Rx is CF3, CN, CORx1, COORx2, CONRx3Rx3', SO2Rx4 or SO2NRx5Rx5 '; and Rx1, Rx2 and Rx4 are each independently a hydrogen or lower alkyl atom that can be substituted; and Rx3, Rx3', Rx5 and Rx5 'are each independently a hydrogen or lower alkyl atom that can be substituted , provided, however, that Rx3 and Rx3 '; and Rx5 and Rx5', each independently, together with the nitrogen atom to which they are attached, may form a heterocyclic group which may be substituted; R3 is a phenyl which may be substituted; X1 is CH, CX1a or N where X1a is lower alkyl that it may be substituted; X2 is CH, CX2a, or N where: X2a is lower alkyl; or X2a is a substituent selected from group of substituents A1, or lower alkyl which is substituted by one or more of the same or different substituents selected from group of substituents A1, wherein group of substituents A1 it is a halogen atom; cyano; hydroxy; lower alkylamino; di-lower alkylamino; lower alkoxy which may be substituted with one or more hydroxy: lower alkylthio groups; lower alkylsulfonyl; and phenyl which may be substituted; or X2a is COORx10, CONRx20Rx30, NHCORx10, NHCONRx20Rx30, NHSO2NRx20Rx30, NRx40Rx50 or CH2NRx40Rx50, where: Rx10 is a hydrogen or lower alkyl atom that may be substituted; Rx20 and Rx30, which may be the same or different, are each a hydrogen atom, lower alkyl that can be substituted or cycloalkyl that can be substituted; or alternatively Rx20 and Rx30, together with the nitrogen atom to which they are attached, form a 5- or 6-membered aliphatic heterocyclic group containing at least one atom selected from N, O and S and which may be substituted; and Rx40 and Rx50, which may be the same or different, are a hydrogen atom, lower alkyl that can be substituted or cycloalkyl that can be substituted; or X2a is a 5- to 6-membered aliphatic heterocyclic group containing at least one atom selected from N, O, and S and which may be substituted, in which two hydrogen atoms that are bonded to the same carbon atom of the aliphatic heterocyclic group they can be substituted with oxo and two adjacent carbon atoms that make up the aliphatic heterocyclic ring can form a double bond; or a lower alkyl that is substituted with the aliphatic heterocyclic group; or X2a is a 5- to 6-membered aromatic heterocyclic group containing at least one atom selected from N, O, and S and which may be substituted; or a lower alkyl that is substituted with the aromatic heterocyclic group; X3 is CH, CX3a, or N where X3a is a lower alkyl that may be substituted; provided, however, that between X1, X2 and X3, the number of nitrogens is 0 or 1; W is the following residue: ** Formula ** in which: W2 is CH, CW2a, N, NW2b, O or S, in which W2a and W2b are each independently a hydrogen atom, a halogen atom, cyano , lower alkyl having one to two carbon atoms, cycloalkyl having three to five carbon atoms, or lower alkyl having one to two carbon atoms that may be substituted with one or more halogen atoms; W3 is C or N; at least one of W1, W2 and W3 is a carbon atom; however, two of W1, W2, and W3 are not simultaneously O or S.
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