| 摘要 |
The present invention is directed to compounds, useful as PDE10 inhibitors, having the formula where R1, R2, R3, R4, X, Y and Z are as defined herein, pharmaceutical compositions containing such compounds and processes for preparing such compounds. The invention is also directed to methods of treating diseases mediated by PDE10, such as obesity, non-insulin dependent diabetes, schizophrenia, bipolar disorder, obsessive-compulsive disorder, and the like.
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