Synthesis and In Vitro Antimicrobial Activity of New α-Aminophosphonates via Tetrazolo [1,5-a] Quinoline Derivatives

Abstract

A series of diethyl (4-fluorophenylamino) (substituted tetrazolo[1,5-a]quinolin-4-yl)methyl phosphonate derivatives has been synthesized for the first time from tetrazolo [1,5-a] quinoline derivatives. Elemental analysis, IR, 1H NMR, 13C NMR, and mass spectral data elucidated the structures of the all newly synthesized compounds. In vitro antimicrobial activities of synthesized compounds have been investigated against Gram-positive Bacillus subtilis, Gram-negative Escherichia coli, and two fungi Candida albicans and Aspergillus niger in comparison with standard drugs. Significantly, microbiological behavior of these newly synthesized derivatives possesses significant antibacterial and antifungal activity. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file.