A new parenteral cephalosporin. SK&F 59962: 7-trifluoromethylthioacetamido-3-(1-methyl-1H-tetrazol-5-ylthiomethyl)-3-cephem-4-carboxylic acid. Chemistry and structure activity relationships.
作者:ROBERT M. DEMARINIS、JOHN R. E. HOOVER、GEORGE L. DUNN、PAUL ACTOR、JOSEPH V. URI、JERRY A. WEISBACH
DOI:10.7164/antibiotics.28.463
日期:——
The synthesis, microbiological profile and in vivo effectiveness in laboratory animals of a series of cephalosporins having 7-acyl substituents derived from methylthioacetic acid are described. Structure-activity relationships examined include the effect of oxidation of the side-chain sulfur atom, replacement of the (side-chain) methyl hydrogens by fluorine and replacement of the 3-acetoxy substituent by thioheterocycles. One derivative, 7-trifluoromethylthioacetamido-3-(1-methyl-1H-tetrazol-5-ylthiomethyl)-3-cephem-4-carboxylic acid (SK&F 59962), was found to have outstanding antibacterial activity in vitro and in vivo.
本研究介绍了一系列头孢菌素的合成、微生物学特征和在实验室动物体内的有效性,这些头孢菌素的 7-酰基取代基来自甲硫基乙酸。所研究的结构-活性关系包括侧链硫原子氧化、氟取代(侧链)甲基氢和硫杂环取代 3-乙酰氧基取代基的影响。其中一种衍生物,即 7-三氟甲基硫代乙酰氨基-3-(1-甲基-1H-四唑-5-基硫甲基)-3-头孢-4-羧酸(SK&F 59962),在体外和体内都具有出色的抗菌活性。