The invention relates to compounds of formula (I): in which: n is equal to 0 or 1 D represents an oxygen atom or a bond W represents a nitrogen atom or a -CH- group X1 represents a nitrogen atom or a -CH=CH- group X2 represents an oxygen atom or a nitrogen atom X3 represents an oxygen atom or a nitrogen atom one of X1,X2,X3 being other than a nitrogen atom, X2 and X3 not being an oxygen atom at the same time R1,R2 are absent or represent, (i) independently of one another, a hydrogen atom or a (C1 -C4)alkyl group, (ii) R1 and R2 may form, with the carbon atom to which they are attached, a -(C3-C10)cycloalkyl-, group Y represents a -(C3-C10)cycloalkyl, aryl or aryloxy group, said groups being optionally substituted with one or more substituents chosen from a halogen atom or a (C1-C6)alkoxy group Z1 is absent or represents an -NH- function Z2 and Z3 are as defined in the description. The invention also relates to a process for preparing compounds of formula (I), compositions containing them and their application in therapeutics.
