been self-condensed to form pyridones. N-Alkylacetoacetamides give 2-pyridones, while N-arylacetoacetamides give 4-pyridones. In an attempt to develop nonacidic, nonsteroidal antiinflammatory agents, the pyridones were tested in a carrageenan-induced pedal edema assay in rats. While the 2-pyridones were not active, 9 of 17 4-pyridones tested were active, and one compound (4g) had antiinflammatory efficacy
几种N-烷基和N-芳基乙酰乙酰胺已经自缩合形成
吡啶酮。N-烷基乙酰乙酰胺产生2-
吡啶酮,而N-芳基乙酰乙酰胺产生4-
吡啶酮。为了开发非酸性,非甾体类抗炎药,在
卡拉胶中通过大鼠角叉菜胶诱发的踏板
水肿试验对
吡啶酮进行了测试。虽然2-
吡啶酮没有活性,但是测试的17种4-
吡啶酮中有9种是活性的,一种化合物(4g)在剂量反应分析(ED50值)中具有抗炎功效。通过标准的多维观察分析法测定小鼠的LD50值,可将大多数化合物视为无毒的。