Abstract
Heterocyclic compounds can specifically regulate bacterial development by targeting specific bacterial enzymes and metabolic pathways. The ESKAPE pathogens are multidrug-resistant and cause nosocomial infections, which is one of the greatest challenges in clinical practice. The search for novel agents to combat resistant bacteria has become one of the most important areas of antibacterial research today. Heterocyclic compounds offer a valuable strategy in the fight against resistance as they can be designed to interact with bacterial targets that are less prone to developing resistance mechanisms. Bacterial histidine kinases (HKs), which are a component of two-component bacterial systems, are a promising target for new antibacterial compounds. We have designed and synthesized novel indole derivatives as antibacterial agents. Among the series, indole-coumarin (4b) and bisindole (4e) have shown the best inhibitory activity against S. aureus. Further, in silico docking studies show that compounds 4b and 4e could target histidine kinases in bacteria.
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