Quinazolinone azolyl ethanols: potential lead antimicrobial agents with dual action modes targeting methicillin-resistant Staphylococcus aureus DNA

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Aim: Due to bacterial drug resistance, a new series of quinazolinone azolyl ethanols were synthesized and evaluated. Results:In vitro antibacterial assay showed that triazolyl ethanol quinazolinone 3a was the most active compound, especially against methicillin-resistant Staphylococcus aureus (MRSA) with minimal inhibitory concentration value of 8 µg/ml, which was superior to chloromycin and comparable to norfloxacin. Molecular docking study displayed that compound 3a could interact with MRSA DNA by the formation of hydrogen bonds.

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