The subject matter of the present invention are compounds corresponding to formula (I):in which: X is an unsubstituted or substituted divalent (C1-C5)alkylene radical; RI is an —NR8R9 group; or an unsubstituted or substituted piperidin-3-yl or piperidin-4-yl radical; R2 is a hydrogen atom, a halogen atom, an Alk group or an OAlk group; R3 is a hydrogen atom, a halogen atom, an Alk group or an OAlk group; R4 is a hydrogen atom, a halogen atom, an Alk group, a hydroxyl or an OAlk group; and R5 is a hydrogen atom, a halogen atom, an Alk group, a hydroxyl or an OAlk group.