Design and synthesis of new N-substituted amino methyl-[1,2,3] triazolyl moieties of fluoroquinolones as antibacterial agents

Abstract

A series of twenty new N-substituted amino methyl-[1,2,3] triazolyl derivatives at C-7 position of fluoroquinolones were designed and synthesized through multistep synthesis. The synthesized compounds were characterized by 1H NMR, 13C NMR, ESI–MS, and IR. The antibacterial activities of these new fluoroquinolones were evaluated using a standard broth micro dilution technique. Out of the twenty derivatives, aryl substituted amino derivatives (6m to 6q) exhibited very good potency in inhibiting the growth of Methicillin-sensitive Staphylococcus aureus (MSSA), Methicillin-resistant Staphylococcus aureus (MRSA), and Vancomycin-Resistant Enterococcus faecalis (VRE faecalis) (MIC: 0.25–4.00 μg/mL) as compared to the marketed drugs Linezolid and Ciprofloxacin.