| 摘要 |
Trans isomers of 1-piperazino-1,2-dihydroindene compounds having formula (I), <IMAGE> I wherein X and Y are hydrogen, halogen, trifluoromethyl, alkyl, alkylthio, trifluoromethylthio, alkoxy, hydroxy, alkylsulfonyl, amino, alkylamino, nitro or cyano; Ar is a phenyl, thienyl or furyl group, each optionally substituted; R1 is hydrogen, or optionally hydroxy substituted alkyl, alkenyl, cycloalkyl or cycloalkylalkyl; R2 is alkyl, alkenyl, cycloalkyl, or cycloalkylalkyl; or R1 and R2 together form a 5 to 7-membered heterocyclic ring fused with the piperazine ring, which ring may be substituted with hydroxy; R3 is hydrogen, alkyl, alkenyl, cycloalkyl or cycloalkylalkyl; or R2 and R3 together form a 3 to 7-membered carbocyclic ring which is spiro-fused to the piperazine ring; and R4 is hydrogen or alkyl. The compounds of the invention have potent antagonist action on dopamine D1 receptors and are useful in the treatment of diseases of the central nervous system, such as psychoses, schizophrenia (positive as well as negative symptoms), anxiety, depression, sleep disturbances, migraine, Parkinson's disease or cocaine abuse. |
