Structure-Based Design, Synthesis, and Study of Potent Inhibitors of β-Ketoacyl-acyl Carrier Protein Synthase III as Potential Antimicrobial Agents

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Abstract
Fatty acid biosynthesis is essential for bacterial survival. Components of this biosynthetic pathway have been identified as attractive targets for the development of new antibacterial agents. FabH, β-ketoacyl-ACP synthase III, is a particularly attractive target, since it is central to the initiation of fatty acid biosynthesis and is highly conserved among Gram-positive and -negative bacteria. Small molecules that inhibit FabH enzymatic activity have the potential to be candidates within a novel class of selective, nontoxic, broad-spectrum antibacterials. Using crystallographic structural information on these highly conserved active sites and structure based drug design principles, a benzoylaminobenzoic acid series of compounds was developed as potent inhibitors of FabH. This inhibitor class demonstrates strong antibacterial activity against Gram-positive and selected Gram-negative organisms.

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