| 摘要 |
The invention is related to compounds, being useful in treating psychosis, of the formula: <IMAGE> wherein: R1 is hydrogen, lower-alkyl or phenyl-lower-alkyl; R2 and R4 are the same or different lower-alkyl; R3 is hydrogen or lower-alkyl; m is two or three; n is an integer from zero to three; and R5 is hydrogen, lower-alkyl, C3-C7-monocyclic cycloalkyl, allyl, or propargyl; or a pharmaceutically acceptable acid-addition salt thereof.
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