Chemistry - A European Journal p. 15254 - 15266 (2018)
Update date:2022-08-03
Topics:
Decuyper, Lena
Deketelaere, Sari
Vanparys, Lore
Juki?, Marko
Sosi?, Izidor
Sauvage, Eric
Amoroso, Ana Maria
Verlaine, Olivier
Joris, Bernard
Gobec, Stanislav
D'hooghe, Matthias
As a complement to the renowned bicyclic β-lactam antibiotics, monocyclic analogues provide a breath of fresh air in the battle against resistant bacteria. In that framework, the present study discloses the in silico design and unprecedented ten-step synthesis of eleven nocardicin-like enantiomerically pure 2-{3-[2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetamido]-2-oxoazetidin-1-yl}acetic acids starting from serine as a readily accessible precursor. The capability of this novel class of monocyclic 3-amino-β-lactams to inhibit penicillin-binding proteins (PBPs) of various (resistant) bacteria was assessed, revealing the potential of α-benzylidenecarboxylates as interesting leads in the pursuit of novel PBP inhibitors. No deactivation by representative enzymes belonging to the four β-lactamase classes was observed, while weak inhibition of class C β-lactamase P99 was demonstrated.
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