Heterocyclic methylsulfone hydroxamic acid LpxC inhibitors as Gram-negative antibacterial agents.
McAllister LA, Montgomery JI, Abramite JA, Reilly U, Brown MF, Chen JM, Barham RA, Che Y, Chung SW, Menard CA, Mitton-Fry M, Mullins LM, Noe MC, O'Donnell JP, Oliver RM, Penzien JB, Plummer M, Price LM, Shanmugasundaram V, Tomaras AP, Uccello DP.
The synthesis and antibacterial activity of heterocyclic methylsulfone hydroxamates is presented. Compounds in this series are potent inhibitors of the LpxC enzyme, a key enzyme involved in the production of lipopolysaccharide (LPS) found in the outer membrane of Gram-negative bacteria. SAR evaluation of compounds in this series revealed analogs with potent antibacterial activity against challenging Gram-negative species such as Pseudomonas aeruginosa and Klebsiella pneumoniae.