Bioorganic Chemistry p. 175 - 183 (2018)
Update date:2022-08-12
Topics:
Gatadi, Srikanth
Gour, Jitendra
Kaul, Grace
Shukla, Manjulika
Dasgupta, Arunava
Akunuri, Ravikumar
Tripathi, Richa
Madhavi
Chopra, Sidharth
Nanduri, Srinivas
Occurrence of infections due to the drug resistant Staphylococcus aureus is on rise necessitating the need for rapid development of new antibacterial agents. In our present work, a series of new 3-phenylquinazolin-4(3H)-one derivatives were designed, synthesized and evaluated for their antibacterial activity against ESKAP (E. coli, S. aureus, K. pneumoniae, A. baumannii, P. aeroginosa) pathogen panel and pathogenic mycobacterial strains. The study revealed that compounds 4a, 4c, 4e, 4f, 4g, 4i, 4o and 4p exhibited selective and potent inhibitory activity against Staphylococcus aureus with MIC values in the range of 0.125–8 μg/mL. Further, the compounds 4c, 4e and 4g were found to be non toxic to Vero cells (CC50 = >10–>100 μg/mL) and exhibited favourable selectivity index (SI = 40–>200). The compounds 4c, 4e and 4g also showed potent inhibitory activity against various MDR-S. aureus including VRSA. The promising results obtained indicated the potential use of the above series of compounds as promising antibacterial agents for the treatment of multidrug resistant Staphylococcus aureus infections.
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