Discovery of Selective and Potent Inhibitors of Gram-Positive Bacterial Thymidylate Kinase (TMK)
作者:Gabriel Martínez-Botella、John N. Breen、James E. S. Duffy、Jacques Dumas、Bolin Geng、Ian K. Gowers、Oluyinka M. Green、Satenig Guler、Martin F. Hentemann、Felix A. Hernandez-Juan、Diane Joseph-McCarthy、Sameer Kawatkar、Nicholas A. Larsen、Ovadia Lazari、James T. Loch、Jacqueline A. Macritchie、Andrew R. McKenzie、Joseph V. Newman、Nelson B. Olivier、Linda G. Otterson、Andrew P. Owens、Jon Read、David W. Sheppard、Thomas A. Keating
DOI:10.1021/jm3011806
日期:2012.11.26
Thymidylate kinase (TMK) is an essential enzyme in bacterial DNA synthesis. The deoxythymidine monophosphate (dTMP) substrate binding pocket was targeted in rational-design, structure-supported effort, yielding a unique series of antibacterial agents showing a novel, induced-fit binding mode. Lead optimization, aided by X-ray crystallography, led to picomolar inhibitors of both Streptococcus pneumoniae and Staphylococcus aureus TMK. MICs < 1 mu g/mL were achieved against methicillin-resistant S. aureus (MRSA), S. pneumoniae, and vancomycin-resistant. Enterococcus (VRE). Log D adjustments yielded single diastereomers 14 (TK-666) and 46, showing a broad antibacterial spectrum against Gram-positive bacteria and excellent selectivity against the human thymidylate kinase ortholog.