Abstract

In the present investigation a new class of quinoline derivatives containing pyrazole moiety have been designed and synthesized by condensation of 2-(quinolin-8-yloxy)acetohydrazide with various chalcones. These newly synthesized quinoline derivatives containing pyrazole moiety were screened for their minimum inhibitory concentration by antibacterial activity against two kinds of strains i.e. Staphylococcus aureus, Escherichia coli and antifungal activity against Aspergillus niger. The results showed that some of the compounds exhibited moderate to good antibacterial activity against both the strains and a few compounds were active in antifungal activity. The structure?activity relationships were briefly discussed. The studies indicated that variation of substituent in the aromatic rings changes the antibacterial activity and compounds containing electron withdrawing groups exhibited potential antifungal activity

Keywords

Quinolin-8-ol, Ethyl chloroacetate, Hydrazine hydrate, Chalcone, Pyrazole, Antibacterial activity and Antifungal activity