Heterocyclyl aminoimidazopyridazines

A compound of general formula (I):

• in which:
• A represents a group selected from:
• wherein one or more R3 substituents, independent from each other, is (are) present in any position of the A group;
• and
• wherein * indicates the point of attachment of said groups with the rest of the molecule;
• represents a group selected from:
• said group being substituted with one or more substituents independently selected from an —OH group and a HO—C1-C6-alkyl-, and
• wherein * indicates the point of attachment of said groups with the rest of the molecule;
• R3 represents a substituent selected from:
• a hydrogen atom, a halogen atom, a —CN, C1-C6-alkyl-, C1-C6-haloalkyl-, —OH, C1-C6-alkoxy-, C1-C6-haloalkoxy- group;
• R4 represents
• a hydrogen atom;
• R′ represent a substituent selected from:
• C1-C6-alkyl-, C1-C6-haloalkyl-;
• or a stereoisomer, a tautomer, an N-oxide, a hydrate, a solvate, or a salt thereof, or a mixture of same.