Compound corresponding to formula: in which: - n represents 1 or 2; - m represents 0 or 1; - A represents a fused heterocyclic group of formula and B represents a hydrogen atom; or A represents a hydrogen atom; and B represents a fused heterocyclic group of formula The fused heterocycle of formula Y may be attached to the rest of the molecule via any of the available carbon atoms, and in which: - U completes: - either an aromatic or saturated 6-atom nucleus, containing one or two nitrogen atoms, the nucleus possibly being substituted with one or two halogen atoms, one or two (C1-C4)alkyl or (C1-C4)alkoxy groups, or one or two perfluoroalkyl radicals; - or an aromatic or saturated 5-atom nucleus, containing a nitrogen, oxygen or sulfur atom, the nucleus possibly being substituted with one or two groups (C1-C4)alkyl; - X and X1 represent CH or N; - R and R1 located on any of the available positions, independently represent a hydrogen atom, a halogen atom, a group (C1-C4)alkyl, (C1-C4)alkoxy, a perfluoroalkyl or trifluoromethoxy radical, a cyano or a group COOH, COOalkyl, CONR3R4 or NHCOR3; - -W- is a nitrogenous heterocycle chosen from: -W- = - 1-2 represents 1 or 2; - 1-3 represents 1, 2 or 3; - R2 represents a group of formula: - in which R5 and R6, located on any of the available positions, independently represent a hydrogen atom, a halogen atom, a group (C1-C4)alkyl or (C1-C4)alkoxy, a trifluoromethyl or trifluoromethoxy radical, a cyano or a group COOH, COOalkyl, COOcycloalkyl, SOalkyl, SO 2 alkyl, CONR3R4, NR3R4 or NHCOR3; or one of the groups R5 and R6 may also represent a heterocycle chosen from: - Z represents an oxygen or sulfur atom; - R3 and R4 represent a hydrogen or a group (C1-C6) alkyl; in the form of the base or of an acid-addition salt. - n represents 1 or 2; - m represents 0 or 1; - A represents a fused heterocyclic group of formula - U completes: - either an aromatic or saturated 6-atom nucleus, containing one or two nitrogen atoms, the nucleus possibly being substituted with one or two halogen atoms, one or two (C1-C4)alkyl or (C1-C4)alkoxy groups, or one or two perfluoroalkyl radicals; - or an aromatic or saturated 5-atom nucleus, containing a nitrogen, oxygen or sulfur atom, the nucleus possibly being substituted with one or two groups (C1-C4)alkyl; - either an aromatic or saturated 6-atom nucleus, containing one or two nitrogen atoms, the nucleus possibly being substituted with one or two halogen atoms, one or two (C1-C4)alkyl or (C1-C4)alkoxy groups, or one or two perfluoroalkyl radicals; - or an aromatic or saturated 5-atom nucleus, containing a nitrogen, oxygen or sulfur atom, the nucleus possibly being substituted with one or two groups (C1-C4)alkyl; - X and X1 represent CH or N; - R and R1 located on any of the available positions, independently represent a hydrogen atom, a halogen atom, a group (C1-C4)alkyl, (C1-C4)alkoxy, a perfluoroalkyl or trifluoromethoxy radical, a cyano or a group COOH, COOalkyl, CONR3R4 or NHCOR3; - -W- is a nitrogenous heterocycle chosen from: -W- = -W- = - 1-2 represents 1 or 2; - 1-3 represents 1, 2 or 3; - R2 represents a group of formula: - in which R5 and R6, located on any of the available positions, independently represent a hydrogen atom, a halogen atom, a group (C1-C4)alkyl or (C1-C4)alkoxy, a trifluoromethyl or trifluoromethoxy radical, a cyano or a group COOH, COOalkyl, COOcycloalkyl, SOalkyl, SO 2 alkyl, CONR3R4, NR3R4 or NHCOR3; - in which R5 and R6, located on any of the available positions, independently represent a hydrogen atom, a halogen atom, a group (C1-C4)alkyl or (C1-C4)alkoxy, a trifluoromethyl or trifluoromethoxy radical, a cyano or a group COOH, COOalkyl, COOcycloalkyl, SOalkyl, SO 2 alkyl, CONR3R4, NR3R4 or NHCOR3; - Z represents an oxygen or sulfur atom; - R3 and R4 represent a hydrogen or a group (C1-C6) alkyl;