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苯基哒嗪酮及其GABA衍生物的合成、抗惊活性及构效关系的研究

徐萍, 王书玉, 刘维勤   

  1. 北京医科大学药物化学教研室 北京 100083
  • 收稿日期:1992-02-14 修回日期:1992-08-30 出版日期:1992-12-15 发布日期:1992-12-15

Studies on the Synthesis, Anticonvulsant Activity, and the Structure-Activity Relationships of Phenyl Pyridazinones and their GABA Derivatives

Ping Xu, Shu-Yu Wang, Wei-Qin Liu   

  1. Department of Medicinal Chemistry; Beijing Medical University, Beijing 100083
  • Received:1992-02-14 Revised:1992-08-30 Online:1992-12-15 Published:1992-12-15

摘要: 本文报道了146-芳基-4, 5-二氢-3(2H)哒嗪酮, 156-芳基-3(2H)哒嗪酮和176-芳基哒嗪的3GABA衍生物的合成及其抗电惊活性。活性最强的是2',4'-二氯苯基-3(2H)哒嗪酮(ED50 = 10.15 mg/kg)。对芳基哒嗪酮类的构效分析表明, 苯环上的取代基对化合物的抗惊活性有明显影响, 吸电子取代基和疏水性参数值较大的取代基有利于提高化合物的抗惊活性。

关键词: 芳基哒嗪酮, 3-GABA-6-芳基哒嗪, 抗惊活性, 构效关系

Abstract: In searching for effective anticonvulsant agents, fourteen 6-aryl-4.5-dihydro-3(2H) pyridazinones. Fifteen 6-aryl-3(2H) pyridazinones, and seventeen 3-GABA derivatives of 6-aryIpyridazines have been synthesized, and evaluated in mice for the ability to antagonize maximal electroshock seizure (MES). The ED50 values showed that 6-(2',4'-dichlorophenyt)-3(2H) pyridazinone was the most potent anticonvulsant among these corn- pounds (ED50 = 10.15 mg/kg). The structure-activity relationships of the aryl pyridazinones were studied. The result showed that: (1)the higher the value of the hydrophobic parameter л of the substituent on the phenyl ring. The more potent the anticonvulsant activity of the cornpound. And (2) only the compounds with an electron withdrawing substituent on the phenyl ring exhibited appreciable anticonvulsant activity.

Key words: Aryl pyridazinones, 3-GABA-6-aryl pyridazines, Anticonvulsant activity, Structure-activity relationships

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