1, 2, 4 -OXADIAZOLE DERIVATIVES AND THEIR THERAPEUTIC USE

New derivatives of general formula (I), or pharmaceutically acceptable salts or N- oxides thereof wherein,either (i) A is selected from the group consisting of -N-, -O- and -S-; B and C are independently selected from the group consisting of -N- and -O-, with the proviso that two of A, B and C are nitrogen atoms, or (ii) two of A, B and C are -N- and one of A, B and C is -NH-; G1 is selected from the group consisting of -CH2-, -NH- and -O-; G2 is selected from the group consisting of -NR4- and -O-; R1 represents: > a 8 to 10 membered bicyclic N-containing heteroaryl group optionally substituted with a C1-4 carboxyalkyl group or a C1-4 aminoalkyl group, > a pyridyl group optionally substituted with one or more substituents selected from hydroxy groups, C1-4 alkyl groups, C1-4 carboxyalkyl groups, C1-4 haloalkyl groups, C1-4 alkoxy groups, amino groups, C1-4 aminoalkyl groups and C1-4 aminoalkoxy groups, > a pyridone group substituted with one or more C1-4 alkyl groups; C1-4 haloalkyl groups or C1-4 aminoalkyl groups, or > a group of formula: