Discovery of a Cyclic Boronic Acid β-Lactamase Inhibitor (RPX7009) with Utility vs Class A Serine Carbapenemases
摘要:
The increasing dissemination of carbapenemases in Gram-negative bacteria has threatened the clinical usefulness of the beta-lactam class of antimicrobials. A program was initiated to discover a new series of serine beta-lactamase inhibitors containing a boronic acid pharmacophore, with the goal of finding a potent inhibitor of serine carbapenemase enzymes that are currently compromising the utility of the carbapenem class of antibacterials. Potential lead structures were screened in silico by modeling into the active sites of key serine beta-lactamases. Promising candidate molecules were synthesized and evaluated in biochemical and whole-cell assays. Inhibitors were identified with potent inhibition of serine carbapenemases, particularly the Klebsiella pneumoniae carbapenemase (KPC), with no inhibition of mammalian serine proteases. Studies in vitro and in vivo show that RPX7009 (9f) is a broad-spectrum inhibitor, notably restoring the activity of carbapenems against KPC-producing strains. Combined with a carbapenem, 9f is a promising product for the treatment of multidrug resistant Gram-negative bacteria.
[EN] SYNTHESIS OF BORONATE SALTS AND USES THEREOF<br/>[FR] SYNTHÈSE DE SELS BORONATE ET UTILISATIONS DE CEUX-CI
申请人:REMPEX PHARMACEUTICALS INC
公开号:WO2015171430A1
公开(公告)日:2015-11-12
Disclosed herein are boronate intermediates in the synthesis of antimicrobial compounds and the use and preparation thereof. Some embodiments relate to crystalline boronate salt derivatives and their use in the synthesis of therapeutic compounds.