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.
Semisynthetic cephalosporins. Synthesis and structure-activity relations of 7-sulfonylacetamido-3-cephem-4-carboxylic acids
作者:R. M. DeMarinis、J. R. E. Hoover、L. L. Lam、J. V. Uri、J. R. Guarini、L. Phillips、P. Actor、J. A. Weisbach
DOI:10.1021/jm00228a003
日期:1976.6
The synthesis and in vitro and in vivo activities of a series of 7-sulfonylacetamido-3-cephem-4-carboxylic acids with acetoxymethyl or heterocyclic thiomethyl substituents at the 3 position are described. Lengthening the alkyl chain attached to the sulfonyl group increased gram-positive activity but the effect on gram-negative activity was variable. Other structural changes on the 7-acyl side chain