N-alkyl-heterocyclyl carboxamide derivatives

A compound of formula (I)

• in which:
• R40 is selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a nitro group, a C1-C4-alkyl, a C1-C4-halogenoalkyl having 1 to 5 halogen atoms, a C3-C6-cycloalkyl, a C1-C4-alkoxy, a C1-C4-halogenoalkoxy having 1 to 5 halogen atoms, a C1-C4-alkylthio, a C1-C4-halogenoalkylthio having 1 to 5 halogen atoms, an aminocarbonyl, and an aminocarbonyl-C1-C4-alkyl;
• R41 is selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a C1-C4-alkyl, a C1-C4-alkoxy, a C1-C4-halogenoalkoxy having 1 to 5 halogen atoms, and a C1-C4-alkylthio;
• and
• R42 is selected from the group consisting of a hydrogen atom, a C1-C4-alkyl, a C1-C4-halogenoalkyl having 1 to 5 halogen atoms, a hydroxy-C1-C4-alkyl, a C2-C6-alkenyl, a C3-C6-cycloalkyl, a C1-C4-alkylthio-C1-C4-alkyl, a C1-C4-halogenoalkylthio-C1-C4-alkyl having 1 to 5 halogen atoms, a C1-C4-alkoxy-C1-C4-alkyl, a C1-C4-halogenoalkoxy-C1-C4-alkyl having 1 to 5 halogen atoms, and a phenyl optionally substituted by a halogen atom, a C1-C4-alkyl, a C1-C4-alkoxyalkyl, or a nitro group;
• R1 is selected from the group consisting of a hydrogen atom, a C1-C6-alkyl group, and a C3-C7-cycloalkyl;
• R2 is a C1-C6-alkyl group;
• R3 is selected from the group consisting of a hydrogen atom, and a C1-C6-alkyl group;
• each X is independently selected from the group consisting of a hydrogen atom and a C1-C6-alkyl group;
• W is selected from the group consisting of a carbon atom and a silicon atom, provided that, if W is carbon, R41 is hydrogen and R42 is not a substituted or unsubstituted phenyl;
• R4, R5 and R6 are independently selected from the group consisting of a hydrogen atom, a halogen atom, and a C1-C6-alkyl group, at least two of the substituents R4, R5 and R6 being different from a hydrogen atom;
• or two of the substituents R4, R5 and R6 may together form a 3-, 4-, 5- or 6-membered non aromatic carbocyclic ring optionally substituted with a C1-C6-alkyl group;
• as well as its salts, N-oxides, and optically active isomers.