The present invention relates to compounds of general formula (I):wherein: R1represents: halogen, CN or NO2; R2represents: hydrogen or halogen; n represents: 1 or 2; R3represents: phenyl substituted by one or more halogens or C1-C6alkyls; or a cyclohexyl; as well as the therapeutically-acceptable salts or solvates thereof.本發明係關於如式(I)之化合物:其中:R1代表:鹵素、CN或NO2;R2代表:氫或鹵素;n代表:1或2;R3代表:經一或更多鹵素或C1-C6烷基取代之苯基;或環己基;以及其醫療上可接受之鹽類或媒合物。