PMID- 23206863 OWN - NLM STAT- MEDLINE DCOM- 20130528 LR - 20121218 IS - 1464-3405 (Electronic) IS - 0960-894X (Linking) VI - 23 IP - 1 DP - 2013 Jan 1 TI - Sulfonylpiperidines as novel, antibacterial inhibitors of Gram-positive thymidylate kinase (TMK). PG - 169-73 LID - S0960-894X(12)01430-8 [pii] LID - 10.1016/j.bmcl.2012.10.128 [doi] AB - Thymidylate kinase (TMK) is an essential enzyme for DNA synthesis in bacteria, phosphorylating deoxythymidine monophosphate (dTMP) to deoxythymidine diphosphate (dTDP), and thus is a potential new antibacterial drug target. Previously, we have described the first potent and selective inhibitors of Gram-positive TMK, leading to in vivo validation of the target. Here, a structure-guided design approach based on the initial series led to the discovery of novel sulfonylpiperidine inhibitors of TMK. Formation of hydrogen bonds with Arg48 in Staphylococcus aureus TMK was key to obtaining excellent enzyme affinity, as verified by protein crystallography. Replacement of a methylene linker in the series by a sulfonamide was accomplished with retention of binding conformation. Further optimization of logD yielded phenol derivative 11, a potent inhibitor of TMK showing excellent MICs against a broad spectrum of Gram-positive bacteria and >10(5) selectivity versus the human TMK homologue. CI - Copyright (c) 2012 Elsevier Ltd. All rights reserved. FAU - Martinez-Botella, Gabriel AU - Martinez-Botella G AD - AstraZeneca Infection Innovative Medicines, 35 Gatehouse Drive, Waltham, MA 02451, USA. gabriel@sagerx.com FAU - Loch, James T AU - Loch JT FAU - Green, Oluyinka M AU - Green OM FAU - Kawatkar, Sameer P AU - Kawatkar SP FAU - Olivier, Nelson B AU - Olivier NB FAU - Boriack-Sjodin, P Ann AU - Boriack-Sjodin PA FAU - Keating, Thomas A AU - Keating TA LA - eng PT - Journal Article DEP - 20121105 PL - England TA - Bioorg Med Chem Lett JT - Bioorganic & medicinal chemistry letters JID - 9107377 RN - 0 (Anti-Bacterial Agents) RN - 0 (Bacterial Proteins) RN - 0 (Piperidines) RN - 0 (Sulfonamides) RN - EC 2.7.4.4 (Nucleoside-Phosphate Kinase) RN - EC 2.7.4.9 (dTMP kinase) SB - IM MH - Anti-Bacterial Agents/chemical synthesis/*chemistry/pharmacology MH - Bacterial Proteins/*antagonists & inhibitors/metabolism MH - Binding Sites MH - Catalytic Domain MH - Crystallography, X-Ray MH - Gram-Positive Bacteria/drug effects MH - Microbial Sensitivity Tests MH - Molecular Docking Simulation MH - Nucleoside-Phosphate Kinase/*antagonists & inhibitors/metabolism MH - Piperidines/chemical synthesis/*chemistry/pharmacology MH - Staphylococcus aureus/*enzymology MH - Structure-Activity Relationship MH - Sulfonamides/chemical synthesis/*chemistry/pharmacology EDAT- 2012/12/05 06:00 MHDA- 2013/05/29 06:00 CRDT- 2012/12/05 06:00 PHST- 2012/09/14 00:00 [received] PHST- 2012/10/25 00:00 [revised] PHST- 2012/10/29 00:00 [accepted] PHST- 2012/12/05 06:00 [entrez] PHST- 2012/12/05 06:00 [pubmed] PHST- 2013/05/29 06:00 [medline] AID - S0960-894X(12)01430-8 [pii] AID - 10.1016/j.bmcl.2012.10.128 [doi] PST - ppublish SO - Bioorg Med Chem Lett. 2013 Jan 1;23(1):169-73. doi: 10.1016/j.bmcl.2012.10.128. Epub 2012 Nov 5.