| 摘要 |
Substituted tetrahydro-1H-pyrazolo[1,2-b]phthalazine, e.g., 5-p-chlorophenyl-2,3,4,10-tetrahydro-1H-pyrazolo[1,2-b]phthalazine, are prepared by the reduction of the corresponding phthalazinone or by ring closure of the corresponding 2-(3-hydroxypropyl)phthalazine and are useful as central nervous system depressants.
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