| 摘要 |
There are disclosed compounds of the formula <IMAGE> wherein R1 and R2 taken together represent <IMAGE> R3 and R4 are hydrogen; R5 is 2-pyridinyl, 2-pyrazinyl, 2-pyrimidinyl, 3-pyridazinyl or any of the foregoing R5 moieties substituted by lower alkyl, lower alkoxy, halo lower alkyl, cyano, nitro or halo; X, Y and Z are, independently, N, S, O, NR6, SO, SO2, CR6 or CH2; A is lower alkylene, O or S; R6 is hydrogen, lower alkyl, aryl, aralkyl; m is 3-7; and the pharmaceutically acceptable salts thereof, and their use as antipsychotic/-anxiolytic agents having a low liability for extrapyramidal side effects.
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