A compound of formula, or pharmaceutically acceptable salts or solvates or deuterated derivative thereof: wherein: • both X and Y represents a hydrogen atom or, • X together with Y form the group -CH=CH-, -CH 2 -O- or -S-, wherein in the case of -CH 2 -O- the methylene group is bound to the carbon atom in the amido substituent holding X and the oxygen atom is bound to the carbon atom in the phenyl ring holding Y, • R 1 and R 2 independently represent a hydrogen atom or a C 1-4 alkyl group, • R 3 represents a group of formula: wherein: ∘ R a represents a hydrogen atom, a hydroxy group, a hydroxymethyl group or a C 1-4 alkyl group, ∘ R b and R c independently represents a thienyl group, a phenyl group, a benzyl group or a C 4-6 cycloalkyl group, ∘ Z represents a direct bond or an oxygen atom, and ∘ * represents the point of attachment of R 3 to the remainder of the molecule of formula, • A 1 and A 2 independently represent a C 1-6 alkylene group optionally substituted with one or more C 1-4 alkyl groups, • L represents a direct bond, -O-, -NH -, - NH- or -NH O- group, wherein in the case of -NH O-, the nitrogen atom is bound to the W substituent and the oxygen atom is bound to the A2 substituent; and • W represents a direct bond or a phenylene group which is optionally substituted with one or more substituents selected from a halogen atom, a C 1-4 alkyl group, a C 1-4 alkoxy group and a cyano group. • both X and Y represents a hydrogen atom or, • X together with Y form the group -CH=CH-, -CH 2 -O- or -S-, wherein in the case of -CH 2 -O- the methylene group is bound to the carbon atom in the amido substituent holding X and the oxygen atom is bound to the carbon atom in the phenyl ring holding Y, • R 1 and R 2 independently represent a hydrogen atom or a C 1-4 alkyl group, • R 3 represents a group of formula: wherein: ∘ R a represents a hydrogen atom, a hydroxy group, a hydroxymethyl group or a C 1-4 alkyl group, ∘ R b and R c independently represents a thienyl group, a phenyl group, a benzyl group or a C 4-6 cycloalkyl group, ∘ Z represents a direct bond or an oxygen atom, and ∘ * represents the point of attachment of R 3 to the remainder of the molecule of formula, • A 1 and A 2 independently represent a C 1-6 alkylene group optionally substituted with one or more C 1-4 alkyl groups, • L represents a direct bond, -O-, -NH -, - NH- or -NH O- group, wherein in the case of -NH O-, the nitrogen atom is bound to the W substituent and the oxygen atom is bound to the A2 substituent; and • W represents a direct bond or a phenylene group which is optionally substituted with one or more substituents selected from a halogen atom, a C 1-4 alkyl group, a C 1-4 alkoxy group and a cyano group. ∘ R a represents a hydrogen atom, a hydroxy group, a hydroxymethyl group or a C 1-4 alkyl group, ∘ R b and R c independently represents a thienyl group, a phenyl group, a benzyl group or a C 4-6 cycloalkyl group, ∘ Z represents a direct bond or an oxygen atom, and ∘ * represents the point of attachment of R 3 to the remainder of the molecule of formula, • A 1 and A 2 independently represent a C 1-6 alkylene group optionally substituted with one or more C 1-4 alkyl groups, • L represents a direct bond, -O-, -NH -, - NH- or -NH O- group, wherein in the case of -NH O-, the nitrogen atom is bound to the W substituent and the oxygen atom is bound to the A2 substituent; and • W represents a direct bond or a phenylene group which is optionally substituted with one or more substituents selected from a halogen atom, a C 1-4 alkyl group, a C 1-4 alkoxy group and a cyano group. • A 1 and A 2 independently represent a C 1-6 alkylene group optionally substituted with one or more C 1-4 alkyl groups, • L represents a direct bond, -O-, -NH -, - NH- or -NH O- group, wherein in the case of -NH O-, the nitrogen atom is bound to the W substituent and the oxygen atom is bound to the A2 substituent; and • W represents a direct bond or a phenylene group which is optionally substituted with one or more substituents selected from a halogen atom, a C 1-4 alkyl group, a C 1-4 alkoxy group and a cyano group.