Journal : Bioorg Med Chem Lett
Title : Discovery of piperazic acid peptide deformylase inhibitors with in vivo activity for respiratory tract and skin infections.
Year : 2019
Volume : 29
Issue : 16
First Page : 2410
Last Page : 2414
Authors : Spletstoser JT, Dreabit J, Knox AN, Benowitz A, Campobasso N, Ward P, Cui G, Lewandowski T, McCloskey L, Aubart KM.
Abstract : The discovery of a novel series of peptide deformylase inhibitors incorporating a piperazic acid amino acid found in nature is described. These compounds demonstrated potent in vitro enzymatic potency and antimicrobial activity. Crystal structure analysis revealed the piperazic acid optimized a key contact with the PDF protein that accounted for the increased enzymatic potency of these compounds. We describe lead optimization of the P3' region of the series that resulted in a compound with good potency against three target organisms. One molecule showed in vivo efficacy in a rat respiratory infection model but ultimately did not meet candidate progression criteria.