Patent ID: 7501449

Claim:
A compound corresponding to the formula (I) in which W represents an oxygen or sulphur atom; X 1 , X 2 , X 3 and X 4 each represent, independently of one another, a hydrogen or halogen atom or a cyano, C 1 -C 6 -alkyl, C 1 -C 6 -fluoroalkyl, C 1 -C 6 -alkoxy or C 1 -C 6 fluoroalkoxy group; Y is in the (N2) or (N3) position; when Y is in the (N2) position, Y represents a C 1 -C 6 -alkyl, C 1 -C 6 -fluoroalkyl, aryl or heteroaryl group; when Y is in the (N3) position, Y represents an aryl or heteroaryl group; the aryl or heteroaryl groups optionally being substituted by one or more atoms or groups selected from halogen atoms and C 1 -C 6 -alkyl, C 1 -C 6 -alkoxy, C 1 -C 6 -alkylthio, C 1 -C 6 -alkyl-S(O)—, C 1 -C 6 -alkyl-S(O) 2 — and C 1 -C 6 -fluoroalkyl groups; the bond in the C4-C5 position is a double or single bond; R 1 and R 2 each represent, independently of one another, an aryl, benzyl or C 1 -C 6 -alkyl group; or else R 1 and R 2 form, with the nitrogen atom to which they are attached, a heterocycle optionally substituted by one or more C 1 -C 6 -alkyl or benzyl groups; in the form of the base or of an addition salt with an acid, and in the hydrate or solvate form.