Author/Authors :
John D. Buynak، نويسنده , , Hansong Chen، نويسنده , , Lakshminaryana Vogeti، نويسنده , , Venkat Rao Gadhachanda، نويسنده , , Christine A. Buchanan، نويسنده , , Timothy Palzkill، نويسنده , , Robert W. Shaw، نويسنده , , James Spencer، نويسنده , , Timothy R. Walsh، نويسنده ,
Abstract :
The synthesis and β-lactamase inhibitory activity of four 6-(mercaptomethyl)penicillinates and the four corresponding 6-(hydroxymethyl)penicillinates are described. These penicillins include both C6 stereoisomers as well as the sulfide and sulfone oxidation states of the penam thiazolidine sulfur. All compounds were evaluated as inhibitors of representative metallo- and serine-β-lactamases enzymes. Selected (mercaptomethyl)penicillinates are shown to inactivate both metallo- and serine-β-lactamases and to display synergism with piperacillin against β-lactamase producing strains.
