Synthesis and biological activity of 3-(N-substituted pyridinium-4-thiomethyl)-7.ALPHA.-formamido cephalosporins.
作者:ANGELA W. GUEST、RICHARD G. ADAMS、MICHAEL J. BASKER、EDWARD G. BRAIN、CLIVE L. BRANCH、FRANK P. HARRINGTON、JANE E. NEALE、MICHAEL J. PEARSON、ISKANDER I. ZOMAYA
DOI:10.7164/antibiotics.46.1279
日期:——
activity of a series of 3-(1-substituted pyridinium-4-thiomethyl)-7 alpha-formamido cephalosporins is described. All the derivatives showed good potency and stability to bacterial beta-lactamases. The antibacterial efficacy seen with the N-alkyl pyridinium substituents was enhanced by the introduction of a catecholic side chain at C-7 and by preparation of N-(substituted amino)pyridinium derivatives
描述了一系列的3-(1-取代的吡啶鎓-4-硫代甲基)-7α-甲酰胺基头孢菌素的合成和抗菌活性。所有衍生物对细菌β-内酰胺酶均显示出良好的效力和稳定性。通过在C-7处引入侧链侧链并通过制备N-(取代的氨基)吡啶鎓衍生物,增强了用N-烷基吡啶鎓取代基所见的抗菌功效。