The present invention relates to compounds of formula (I):in which: R represents a hydrogen or halogen atom or a group (C1-C6)alkyl; X represents one or more substituents chosen from a hydrogen or halogen atom and a group (C1-C6)alkyl, halo(C1-C6)alkyl, (C1-C6)alkoxy, halo(C1-C6)alkoxy, cyano, hydroxyl or hydroxy(C1-C6)alkyl; Y represents a hydrogen or halogen atom or a group (C1-C6)alkyl; R1 represents a group NR2R3 or OR4; R2 and R3 represent, independently of each other, a hydrogen atom or a group (C1-C6)alkyl, hydroxy (C1-C6)alkyl or oxo (C1-C6)alkyl, or alternatively R2 and R3 form, with the nitrogen atom that bears them, a heterocycle optionally substituted with a group (C1-C6)alkyl, hydroxyl or oxo, R4 represents a group (C1-C6)alkyl, hydroxy(C1-C6)alkyl or oxo (C1-C6)alkyl, in the form of base or of acid-addition salt. Therapeutic use thereof and synthetic process therefor.本發明係關於一種式(I)化合物:其中:R表示氫或鹵素原子或基團(C1-C6)烷基;X表示選自氫或鹵素原子及基團(C1-C6)烷基、鹵(C1-C6)烷基、(C1-C6)烷氧基、鹵(C1-C6)烷氧基、氰基、羥基或羥基(C1-C6)烷基之一或多個取代基;Y表示氫或鹵素原子或基團(C1-C6)烷基;R1表示基團NR2R3或OR4;R2及R3彼此獨立地表示氫原子或基團(C1-C6)烷基、羥基(C1-C6)烷基或側氧基(C1-C6)烷基,或者R2及R3與帶有其之氮原子形成視需要經基團(C1-C6)烷基、羥基或側氧基取代之雜環,R4表示基團(C1-C6)烷基、羥基(C1-C6)烷基或側氧基(C1-C6)烷基;該化合物係呈鹼或酸加成鹽形式。