Antibacterial activity of cationic amphiphil conjugates with ciprofloxacin
Keywords:
chemical synthesis, gram-positive bacteria, gram-negative bacteriaAbstract
The aim: Design and synthesis of new compounds with antibacterial activity. Determination of the minimum inhibitory and minimum bactericidal concentration of conjugates of cationic amphiphiles based on quaternary salts of 1,4-diazabicyclo[2.2.2]octane with ciprofloxacin. Materials and methods: The article is dedicated to the synthesis and primary assessment of antibacterial activity in vitro of conjugates of cationic amphiphiles based on quaternary salts of 1,4-diazabicyclo[2.2.2]octane with ciprofloxacin against gram-negative and gram-positive microorganisms. Results: The present work provides hybrid structures which include the widely used antibiotic ciprofloxacin and tetra-cationic DABCO derivatives. The last ones previously showed a wide spectrum of antimicrobial activity as well as primary studies of their antibacterial activity against gram-positive and gram-negative microorganisms in vitro. There was a high in vitro antibacterial activity against gram-negative pathogens, moderate against Staphylococcus aureus and low against Enterococcus faecalis. Conclusions: A range of amphiphilic polycationic compounds based on quaternary salts of 1,4-diazabicyclo[2.2.2]octane (DABCO) was synthesized and their biological activity was studied. The compounds have demonstrated high antibacterial activity. We assume that they can serve as a basis for the development of new antibacterial drugs.
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