Related Experiment Video
Updated: Mar 10, 2026

Visualization of Bacterial Resistance using Fluorescent Antibiotic Probes
Published on: March 2, 2020
Phenylthiazole antibiotics: A metabolism-guided approach to overcome short duration of action
Eman Yahia1, Haroon Mohammad2, Tamer M Abdelghany3
1Department of Pharmaceutical Organic Chemistry, College of Pharmacy, Al-Azhar University, Cairo 11884, Egypt.
Abstract:
Antibacterial resistance is a pressing global health challenge that necessitates the development of new therapeutic agents. Phenylthiazole antibacterial agents have been extensively studied, by our group, as a potential novel class of antibiotics to circumvent the scourge of antibacterial resistance. Previously, the phenylthiazole lead compound 1 was shown to possess potent activity against clinical isolates of methicillin- and vancomycin-resistant Staphylococcus aureus (MRSA and VRSA). The promising activity of this novel class of antibiotics is hampered by their short half-life due to rapid hepatic metabolism. In the present study, a metabolic methylene soft spot in the lead 1 was identified and replaced with an oxygen atom. The newly developed phenylthiazoles, with alkoxy side chains, demonstrate high metabolic stability (t1/2 > 4 h), while maintaining their potent anti-MRSA activity. Furthermore, compound 5p demonstrated a selective advantage over vancomycin with its ability to kill intracellular MRSA.
More Related Videos
Related Concept Videos
Pharmacokinetic–Pharmacodynamic Relationship: Influence of Elimination Half-Life on Effect Duration
Pharmacogenetics of Phase II Enzymes: N-acetyltransferase, Thiopurine S-methyltransferase, UDP-glucuronosyltransferase
Indirect-Acting Cholinergic Agonists: Pharmacokinetics
Reversible agents containing quaternary amines, such as neostigmine and edrophonium, are not easily absorbed orally because they...
Antihypertensive Drugs: Thiazide-Class Diuretics
Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacokinetics
Instead, they are transported by the blood to different tissues. Muscles with a greater blood supply (arteries) and blood flow receive more...
Indirect-Acting Cholinergic Agonists: Mechanism of Action
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex,...

