Metabolic synthesis of arylacetic acid antiinflammatory drugs from arylhexenoic acids. 2. Indomethacin
作者:J. W. Gillard、P. Belanger
DOI:10.1021/jm00394a020
日期:1987.11
Arylacetic acid antiinflammatory drugs can be metabolically produced by beta-oxidation of a 6-arylhex-5-enoic acid side chain. Such a mechanism provides for an in vivo sustained release of the active principle indomethacin from 6-[N-(p-chlorobenzoyl)-2-methylindol-3-yl]hex-5-enoic acid (7). Similarly, biphenylacetic acid was produced from both 6-(4'-biphenylyl)hex-5-enoic acid and its lower even homologue
可以通过6-芳基己基-5-烯酸侧链的β-氧化代谢生成丙烯酸抗炎药。这种机制提供了活性成分吲哚美辛从6- [N-(对氯苯甲酰基)-2-甲基吲哚-3-基]己-5-烯酸的体内持续释放(7)。类似地,联苯乙酸是由6-(4'-联苯基基)己-5-烯酸和其较低的同系物4-(4'-联苯基基)丁-3-烯酸两者产生的。在酵母诱导的痛觉过敏模型中,吲哚衍生物在12小时内产生持续的镇痛作用。在长达24小时内观察到吲哚美辛血浆水平为2微克/毫升。该水平低于由联苯基基己基-5-烯酸生产联苯乙酸的类似情况所达到的水平,这表明在己基-5-烯酸底物之间存在代谢歧视。当消炎痛以等效的镇痛水平给药时,循环药物的水平明显高于代谢衍生药物的水平。因此,吲哚美辛的6-己-5-烯酸衍生物在体内被代谢成吲哚美辛,从而在游离药物的低表观循环血浆水平下产生持续的镇痛作用。这些观察结果提示组织区室化增强生物功效的可能性。