| abstract |
Compound represented by formula (I) or one of its pharmaceutically acceptable salts in which X represents halogen, perhalomethyl, cyano, C1-6 alkoxy, C1-6 alkythio or C1-6 alkylamino; R1 is selected from optionally substituted heterocyclic compounds having an N bond. It has been discovered that said compounds are effective in the treatment of diseases of the central nervous system. |