Abstract
Catechol-containing imidazolium (four) and benzimidazolium chlorides (eight) were synthesized to evaluate their antimicrobial properties. All the compounds were fully characterized using 1 H and 13 C nuclear magnetic resonance, liquid chromatography-mass spectrometry, infrared spectroscopic methods, and elemental analyses. Antimicrobial activities of the compounds were tested against the bacteria Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, Klebsiella pneumoniae, Staphylococcus aureus, methicillin-resistant S. aureus (MRSA), Enterococcus faecalis, and the fungal strains Candida albicans and Candida glabrata, and promising results were achieved. The two most important benzyl-substituted benzimidazolium chlorides, 3l and 3k, showed comparable activity to vancomycin against MRSA.
Keywords:
antibacterial; antifungal; benzimidazolium; catechol; imidazolium.
© 2020 Deutsche Pharmazeutische Gesellschaft.
MeSH terms
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Acinetobacter baumannii / drug effects
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Anti-Bacterial Agents / chemical synthesis
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Anti-Bacterial Agents / chemistry
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Anti-Bacterial Agents / pharmacology*
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Antifungal Agents / chemical synthesis
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Antifungal Agents / chemistry
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Antifungal Agents / pharmacology*
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Benzimidazoles / chemical synthesis
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Benzimidazoles / chemistry
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Benzimidazoles / pharmacology*
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Candida albicans / drug effects
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Candida glabrata / drug effects
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Catechols / chemical synthesis
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Catechols / chemistry
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Catechols / pharmacology*
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Dose-Response Relationship, Drug
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Enterococcus faecalis / drug effects
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Escherichia coli / drug effects
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Imidazoles / chemical synthesis
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Imidazoles / chemistry
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Imidazoles / pharmacology*
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Klebsiella pneumoniae / drug effects
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Methicillin-Resistant Staphylococcus aureus / drug effects
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Microbial Sensitivity Tests
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Molecular Structure
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Pseudomonas aeruginosa / drug effects
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Staphylococcus aureus / drug effects
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Structure-Activity Relationship
Substances
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Anti-Bacterial Agents
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Antifungal Agents
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Benzimidazoles
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Catechols
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Imidazoles
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catechol