Substituted tricyclic derivatives

A compound of formula (I):

• wherein:
• Z represents a bond, a carbonyl group, or a methylene group optionally substituted by one or two groups chosen from a C1-6 alkyl group, a hydroxyl group, and a C1-6 alkoxy group;
• R1 represents a 4-pyridine ring or a 4-pyrimidine ring;
• R2 represents a hydrogen atom;
• R3 represents:
• a hydrogen atom;
• a phenyl or a naphthyl group, these groups being optionally substituted by 1 to 4 substituents selected from a C1-6 alkyl group, a halogen atom, a C1-2 perhalogenated alkyl group, a C1-3 halogenated alkyl group, a hydroxyl group, a C1-6 alkoxy group, a C1-2 perhalogenated alkoxy group, a C1-6 alkylsulfonyl group, a nitro, a cyano, an amino, a C1-6 monoalkylamino group, a C2-12 dialkylamino group, an acetoxy group, an aminosulfonyl group, and a heterocyclic group, this heterocyclic group being optionally substituted by a C1-6 alkyl group, a halogen atom, a C1-2 perhalogenated alkyl group, a C1-3 halogenated alkyl group, a hydroxyl group, or a C1-6 alkoxy group;
• or
• a 5, 6 or 5-6 membered heteroaromatic group, this group being optionally substituted by 1 to 4 substituents selected from a C1-6 alkyl group, a halogen atom, a C1-2 perhalogenated alkyl group, a C1-6 halogenated alkyl group, a hydroxyl group, a C1-6 alkoxy group, a C1-6 halogenated alkoxy group, a nitro, a cyano, an amino, a C1-6 monoalkylamino group, a C2-12 dialkylamino group, a S—(C1-6-alkyl) group, a C(O)O(C1-6-alkyl), and a C(O)O(phenyl) group;
• n represents 0 to 3;
• and
• m represents 0 to 1;
• with the proviso that the compound of formula (I) wherein n and m represent 0, Z represents a bond, R2 and R3 represent a hydrogen atom and R1 represents a 4-pyridine ring is not included;
• or an acid addition salt thereof.