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Title

SYNTHESIS AND STUDY OF SOME NEW QUINOLONE DERIVATIVES CONTAINING A 3-ACETYL COUMARIN FOR THEIR ANTIBACTERIAL AND ANTIFUNGAL ACTIVITIES

Pages

 Start Page 554 | End Page 564

Abstract

 A series of N- [2- (8-metoxy-2H-chromen-2-one) ethyl] piperazinyl QUINOLONES containing a carbonyl related functional groups (oxo or oxyimino) on the ethyl spacer of COUMARIN and piperazin rings was synthesized and studied for their antibacterial and antifungal activities. The synthesis of compounds (6a-6l) was achieved through the versatile and efficient synthetic route that involved reaction of QUINOLONES with appropriately a- bromo ketone or a- bromo oxime derivatives (2, 2a-c). The structures of the new compounds were confirmed by IR, Mass, 1H-NMR and 13C-NMR spectra. More good activities against gram-positive and gram-negative are shown in all compounds. The antifungal data reveals that all compounds have shown weak antifungal activity as compared to Nistatin.

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