4-Amino-5-substituted-3(2<i>H</i>)-pyridazinones as Orally Active Antinociceptive Agents: Synthesis and Studies on the Mechanism of Action
作者:Maria Paola Giovannoni、Nicoletta Cesari、Claudia Vergelli、Alessia Graziano、Claudio Biancalani、Pierfrancesco Biagini、Carla Ghelardini、Elisa Vivoli、Vittorio Dal Piaz
DOI:10.1021/jm070161e
日期:2007.8.1
doses of 3-20 mg kg-1 po, showed good antinociceptive activity, reducing by more than 50% the number of writhes with respect to controls. Compounds 16c, 19a, 20a, and 28 were the most potent of the series because they were able to induce a potent antinociceptive effect at a dose of 3 mg kg-1 po. None of the active compounds at the analgesic dose provoked any visible change in normal behavior, as demonstrated
合成了许多4-氨基-5-乙烯基吡啶酮酮和4-氨基-5-杂环吡啶酮酮,并测试了它们的镇痛活性。以3-20 mg kg-1 po的剂量测试的许多这些化合物均显示出良好的抗伤害感受活性,相对于对照而言,减少了超过50%的扭伤次数。化合物16c,19a,20a和28是该系列中最有效的化合物,因为它们能够以3 mg kg-1 po的剂量诱导有效的镇痛作用。如旋转仪测试所示,在镇痛剂量下,没有一种活性化合物引起正常行为的任何可见变化。作用机理的研究表明,用α2-拮抗剂育亨宾预处理可以完全阻止由活性化合物引起的镇痛作用,这表明α2-肾上腺素能受体的参与。