NOVEL (R)-5-CARBAMOYL-8-FLUORO-3-N,N-DISUBSTITUTED-AMINO-3,4-DIHYDRO-2H-1-BENZOPYRANES

摘要

Compounds of general formula (I), wherein R1 is n-propyl or cyclobutyl; R2 is isopropyl, tertiary butyl, cyclobutyl, cyclopentyl or cyclohexyl; R3 is hydrogen; R4 is hydrogen or methyl; as (R)-enantiomer and in the form of free base or pharmaceutically acceptable salts thereof, process for their preparation, pharmaceutical composition, use of and method of treatment of disorders in CNS.