Antimicrobial 1,3,4-trisubstituted-1,2,3-triazolium salts

James T. Fletcher, Jill M. Sobczyk, Sarah C. Gwazdacz, Aaron J. Blanck

Research output: Contribution to journalArticle

Abstract

A series of 1,3,4-trisubstituted-1,2,3-triazolium bromide salts were prepared by efficient two-step sequences of azide-alkyne cycloaddition and benzylic substitution. The antimicrobial activity of each triazolium salt and correlating triazole precursor was evaluated using a minimum inhibitory concentration (MIC) assay. MIC activities as low as 1 µM against Gram-positive bacteria, 8 µM against Gram-negative bacteria and 4 µM against fungi were observed for salt analogs, while neutral triazoles were inactive. Analogs representing selective and broad-spectrum antimicrobial activity were each identified. MIC structure-activity relationships observed within this motif indicate that the presence of cationic charge and balance of overall hydrophobicity are strongly impactful, while benzyl vs. aryl substituent identity and variation of substituent regiochemistry are not.

LanguageEnglish (US)
JournalBioorganic and Medicinal Chemistry Letters
DOIs
StateAccepted/In press - Jan 1 2018
Externally publishedYes

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Microbial Sensitivity Tests
Triazoles
Salts
Bacteria
Alkynes
Azides
Cycloaddition
Cycloaddition Reaction
Gram-Positive Bacteria
Structure-Activity Relationship
Hydrophobicity
Fungi
Gram-Negative Bacteria
Bromides
Hydrophobic and Hydrophilic Interactions
Assays
Substitution reactions
Thermodynamic properties

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Pharmaceutical Science
  • Drug Discovery
  • Clinical Biochemistry
  • Organic Chemistry

Cite this

Antimicrobial 1,3,4-trisubstituted-1,2,3-triazolium salts. / Fletcher, James T.; Sobczyk, Jill M.; Gwazdacz, Sarah C.; Blanck, Aaron J.

In: Bioorganic and Medicinal Chemistry Letters, 01.01.2018.

Research output: Contribution to journalArticle

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