Novel quinolinylamide derivatives useful as modulators of dopamine and serotonin receptors

A quinolinylamide derivative represented by Formula

• a stereoisomer thereof or a mixture of its stereoisomers, or an N-oxide thereof, or a pharmaceutically acceptable salt thereof, wherein
• X represents CH or N;
• n is 2 or 3;
• R′ represents hydrogen or alkyl;
• and
• Ar represents phenyl or pyridinyl, which phenyl and pyridinyl are optionally substituted one or more times with substituents selected from alkyl, hydroxy, alkoxy, halo, trifluoromethyl, nitro and cyano.