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Updated: Jan 26, 2026

Author Spotlight: Exploring the Antibacterial Effects of Zinc Oxide Nanoparticles in Overcoming Antibiotic Resistance
Published on: September 27, 2024
Proline-based hydroxamates targeting the zinc-dependent deacetylase LpxC: Synthesis, antibacterial properties, and
Dmitrii V Kalinin1, Oriana Agoglitta2, Hélène Van de Vyver3
1Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany; German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Germany; Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Corrensstr. 48, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Münster, Germany.
Abstract:
The Zn2+-dependent deacetylase LpxC is an essential enzyme in Gram-negative bacteria, which has been validated as antibacterial drug target. Herein we report the chiral-pool synthesis of novel d- and l-proline-derived 3,4-dihydroxypyrrolidine hydroxamates and compare their antibacterial and LpxC inhibitory activities with the ones of 4-monosubstituted and 3,4-unsubstituted proline derivatives. With potent antibacterial activities against several Gram-negative pathogens, the l-proline-based tertiary amine 41g ((S)-N-hydroxy-1-(4-{[4-(morpholinomethyl)phenyl]ethynyl}benzyl)pyrrolidine-2-carboxamide) was found to be the most active antibacterial compound within the investigated series, also showing some selectivity toward EcLpxC (Ki = 1.4 μM) over several human MMPs.
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