The reaction between chloromaleic acid anhydride and phenylhydrazine is studied. The constitution of the two isomeric 1-phenyl-3-hydroxy-chloro-pyridazones-(6) is established. Starting with 1-phenyl-3-hydroxy-4-chloro-pyridazone-(6) some derivatives are prepared. Some of them show good analgesic activity.
研究了
氯马来酸酐与苯
肼之间的反应。确定了两个异构的1-苯基-3-羟基-
氯-哒唑酮-(6)的组成。从1-苯基-3-羟基-4-
氯吡啶酮-(6)开始,制备了一些衍
生物。其中一些显示出良好的止痛活性。