A Review on Emerging Insights and Novel Innovations in Thiazole Derivatives as Antibacterial Agents

The rise in bacterial infections, driven by antibiotic resistance, global travel, and poor infection control, poses a major healthcare challenge. Bacteria grow and spread through binary fission, nutrient acquisition, and immune evasion, with the peptidoglycan layer (consisting of sugars and peptides) being crucial for cell wall integrity and protection. Thiazole, a heterocycle containing nitrogen and sulphur, is important in medicinal chemistry and is found in compounds, such as vitamin B1 (thiamine) and penicillin derivatives (sulfazole, ritonavir, abafungin). These thiazole derivatives disrupt bacterial cell wall synthesis by interfering with peptidoglycan-forming enzymes. They are also used as vulcanizing accelerators, anthelmintics, and anticancer agents. This review synthesizes current knowledge on the biological relevance and synthetic approaches of antibacterial thiazole derivatives, with a focus on their mechanisms of action and recent advances in their development.