Document Report Card

ID: ALA2177095

Journal: J Med Chem

Title: Discovery of selective and potent inhibitors of gram-positive bacterial thymidylate kinase (TMK).

Authors: Martínez-Botella G, Breen JN, Duffy JE, Dumas J, Geng B, Gowers IK, Green OM, Guler S, Hentemann MF, Hernandez-Juan FA, Joseph-McCarthy D, Kawatkar S, Larsen NA, Lazari O, Loch JT, Macritchie JA, McKenzie AR, Newman JV, Olivier NB, Otterson LG, Owens AP, Read J, Sheppard DW, Keating TA.

Abstract: Thymidylate kinase (TMK) is an essential enzyme in bacterial DNA synthesis. The deoxythymidine monophosphate (dTMP) substrate binding pocket was targeted in a 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 μg/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.

CiteXplore: 23043329

DOI: 10.1021/jm3011806