Download MendeleyStrategic Approaches to Overcome Resistance against Gram-Negative Pathogens Using beta-Lactamase Inhibitors and beta-Lactam Enhancers: Activity of Three Novel Diazabicyclooctanes WCK 5153, Zidebactam (WCK 5107), and WCK 4234.
Papp-Wallace, K.M., Nguyen, N.Q., Jacobs, M.R., Bethel, C.R., Barnes, M.D., Kumar, V., Bajaksouzian, S., Rudin, S.D., Rather, P.N., Bhavsar, S., Ravikumar, T., Deshpande, P.K., Patil, V., Yeole, R., Bhagwat, S.S., Patel, M.V., van den Akker, F., Bonomo, R.A.(2018) J Med Chem 61: 4067-4086
- PubMed: 29627985
- DOI: https://doi.org/10.1021/acs.jmedchem.8b00091
- Primary Citation of Related Structures:
6B1F, 6B1H, 6B1J, 6B1W, 6B1X, 6B1Y, 6B22 - PubMed Abstract:
Limited treatment options exist to combat infections caused by multidrug-resistant (MDR) Gram-negative bacteria possessing broad-spectrum β-lactamases. The design of novel β-lactamase inhibitors is of paramount importance. Here, three novel diazabicyclooctanes (DBOs), WCK 5153, zidebactam (WCK 5107), and WCK 4234 (compounds 1-3, respectively), were synthesized and biochemically characterized against clinically important bacteria. Compound 3 inhibited class A, C, and D β-lactamases with unprecedented k 2 / K values against OXA carbapenemases. Compounds 1 and 2 acylated class A and C β-lactamses rapidly but not the tested OXAs. Compounds 1-3 formed highly stable acyl-complexes as demonstrated by mass spectrometry. Crystallography revealed that 1-3 complexed with KPC-2 adopted a "chair conformation" with the sulfate occupying the carboxylate binding region. The cefepime-2 and meropenem-3 combinations were effective in murine peritonitis and neutropenic lung infection models caused by MDR Acinetobacter baumannii. Compounds 1-3 are novel β-lactamase inhibitors that demonstate potent cross-class inhibition, and clinical studies targeting MDR infections are warranted.
Organizational Affiliation:
Research Service , Louis Stokes Cleveland Department of Veterans Affairs Medical Center , 10701 East Boulevard , Cleveland , Ohio 44106 , United States.
