Design, synthesis and antimicrobial activities of some new quinoline derivatives carrying 1,2,3-triazole moiety

A new series of [1-(6-methoxy-2-methylquinolin-4-yl)-1H-1,2,3-triazol-4-yl] methanamine derivatives were synthesized starting from 4-methoxyaniline through multi-step reactions. The title compounds 5a–y were prepared by treating the azide intermediate 4 with propargyl bromide and different alkyl/heterocyclic amines in a sequential three component synthesis. All the new compounds were characterized by spectral and elemental analyses. The newly synthesized final compounds were evaluated for their in vitro antibacterial and antifungal activities against pathogenic strains. The preliminary screening results indicated that most of the compounds demonstrated moderate to very good antibacterial and antifungal activities, comparable to the first-line drugs.

Graphical abstractTwenty five new derivatives of [1-(6-methoxy-2-methylquinolin-4-yl)-1H-1,2,3-triazol-4-yl] methanamine have been synthesized and the most effective compounds have MIC of 6.25 μg/mL, which are in comparable with present antibiotics.Figure optionsDownload full-size imageDownload as PowerPoint slide