| abstract |
This invention relates to new use of a compound of general formula (I) wherein: A represents (II), (III), (IV), (V), (VI); D represents oxygen, or sulfur; R1 represents hydrogen or methyl; R2 represents hydrogen, or C¿1?-C4 alkyl; and R?3¿ represents (A), (B), (C), or an enantiomer thereof, and pharmaceutically acceptable salts thereof, processes for preparing them, pharmaceutical compositions containing them and their use in therapy, especially in the treatment of prophylaxis of psychotic disorders and intellectual impairment disorders. |