The present invention provides new pyridazinones of the formula ##STR1## where R is alkyl; R.sub.1 and R.sub.2 are halo, alkyl, alkoxy, amino; nitro or trifluoromethyl; R.sub.3 is hydrogen, hydroxy, or acyloxy; R.sub.4 is hydrogen or alkyl; and R.sub.5 is hydroxy or acyl; which are useful as central nervous system depressants.
本发明提供了新的
吡啶并
咪唑酮化合物,其
化学式为 ##STR1## 其中R为烷基;R.sub.1和R.sub.2为卤素、烷基、烷氧基、
氨基、硝基或三
氟甲基;R.sub.3为氢、羟基或酰氧基;R.sub.4为氢或烷基;R.sub.5为羟基或酰基。这些化合物可用作中枢神经系统
抑制剂。