7ti2
Structure of KPC-2 bound to RPX-7063 at 1.75AStructure of KPC-2 bound to RPX-7063 at 1.75A
Structural highlights
FunctionBLKPC_KLEPN Hydrolyzes carbapenems, penicillins, cephalosporins and monobactams with varying efficiency. Publication Abstract from PubMedEarly efforts to broaden the spectrum and potency of cyclic boronic acid beta-lactamase inhibitor vaborbactam included a series of 7-membered ring boronates. Exploration of stereoisomers and incorporation of heteroatoms allowed identification of the all-carbon cyclic boronate with substituents trans as the preferred core structure, showing inhibition of Class A and C enzymes. Crystal structures of one analog bound to important beta-lactamase enzymes were obtained. When isolated under acidic conditions, these compounds spontaneously formed a neutral cyclic anhydride (intramolecular prodrug) which was shown to have much-improved oral bioavailability (52-69%) compared to the ring-opened carboxylate salt (9%). Broad-spectrum cyclic boronate beta-lactamase inhibitors featuring an intramolecular prodrug for oral bioavailability.,Raja Reddy K, Totrov M, Lomovskaya O, Griffith DC, Tarazi Z, Clifton MC, Hecker SJ Bioorg Med Chem. 2022 May 15;62:116722. doi: 10.1016/j.bmc.2022.116722. Epub 2022, Mar 23. PMID:35358864[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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