A compound of general formula (I) in which: R 1 represents a phenyl group that is substituted with one or two fluorine atoms； A1 represents (CH2) m or (CH2) m-1C (= O)； m is 2, 3, 4 or 5； A2 represents (CH2) n or C (-O) (CH2) n-1； n is 2, 3, 4 or 5； and R2 represents a phenyl group that is substituted with one, two or three substituents independently selected from alkylenedioxy (C1-2), a hydroxyl group, a cyano group, a cycloalkyl (C3-6) group, a halo (C1-4) alkyl group ), a (C1-4) alkoxy group, a (C1-4) alkoxy (C1-4) alkoxy group, a hydroxy (C1-4) hydroxyalkoxy group, a C1-4 alkylsulfanyl group, a (C1-4 alkylsulfonyl group) -4), a haloalkoxy (C1-4) group and a haloalkylsulfonyl (C1-4) group； or a pharmaceutically acceptable salt thereof.Un compuesto de fórmula general (I) en el que: R1 representa un grupo fenilo que está sustituido con uno o dos átomos de flúor； A1 representa (CH2)m o (CH2)m-1C(=O)； m es 2, 3, 4 ó 5； A2 representa (CH2)n o C(-O)(CH2)n-1； n es 2, 3, 4 ó 5； y R2 representa un grupo fenilo que está sustituido con uno, dos o tres sustituyentes seleccionados independientemente entre alquilenodioxi (C1-2), un grupo hidroxilo, un grupo ciano, un grupo cicloalquilo (C3- 6), un grupo haloalquilo (C1-4), un grupo alcoxi (C1-4), un grupo alcoxi (C1-4)-alcoxi (C1-4), un grupo hidroxialcoxi (C1-4), un grupo alquilsulfanilo (C1-4), un grupo alquilsulfonilo (C1-4), un grupo haloalcoxi (C1-4) y un grupo haloalquilsulfonilo (C1-4)； o una sal farmacéuticamente aceptable del mismo.
