Synthesis of Quinolones and Zwitterionic Quinolonate Derivatives with Broad-Spectrum Antibiotic Activity

Quinolones are one of the most extensively used therapeutic families of antibiotics. However, the increase in antibiotic-resistant bacteria has rendered many of the available compounds useless. After applying our prediction model of activity against <i>E. coli</i> to a library of 1000 qu...

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Main Authors: Beatriz Suay-García, Jose-Ignacio Bueso-Bordils, Gerardo Antón-Fos, María-Teresa Pérez-Gracia, Antonio Falcó, Pedro Alemán-López
Format: Article
Language:English
Published: MDPI AG 2022-07-01
Series:Pharmaceuticals
Subjects:
Online Access:https://www.mdpi.com/1424-8247/15/7/818
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author Beatriz Suay-García
Jose-Ignacio Bueso-Bordils
Gerardo Antón-Fos
María-Teresa Pérez-Gracia
Antonio Falcó
Pedro Alemán-López
author_facet Beatriz Suay-García
Jose-Ignacio Bueso-Bordils
Gerardo Antón-Fos
María-Teresa Pérez-Gracia
Antonio Falcó
Pedro Alemán-López
author_sort Beatriz Suay-García
collection DOAJ
description Quinolones are one of the most extensively used therapeutic families of antibiotics. However, the increase in antibiotic-resistant bacteria has rendered many of the available compounds useless. After applying our prediction model of activity against <i>E. coli</i> to a library of 1000 quinolones, two quinolones were selected to be synthesized. Additionally, a series of zwitterionic quinolonates were also synthesized. Quinolones and zwitterionic quinolonates were obtained by coupling the corresponding amine with reagent <b>1</b> in acetonitrile. Antibacterial activity was assessed using a microdilution method. All the compounds presented antibacterial activity, especially quinolones <b>2</b> and <b>3</b>, selected by the prediction model, which had broad-spectrum activity. Furthermore, a new type of zwitterionic quinolonate with antibacterial activity was found. These compounds can lead to a new line of antimicrobials, as the structures, and, therefore, their properties, are easily adjustable in the amine in position 4 of the pyridine ring.
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spelling doaj.art-3b20a8659bc5402093a957d9801c6eb72023-12-01T22:33:20ZengMDPI AGPharmaceuticals1424-82472022-07-0115781810.3390/ph15070818Synthesis of Quinolones and Zwitterionic Quinolonate Derivatives with Broad-Spectrum Antibiotic ActivityBeatriz Suay-García0Jose-Ignacio Bueso-Bordils1Gerardo Antón-Fos2María-Teresa Pérez-Gracia3Antonio Falcó4Pedro Alemán-López5ESI International Chair@CEU-UCH, Departamento de Matemáticas, Física y Ciencias Tecnológicas, Universidad Cardenal Herrera-CEU, CEU Universities San Bartolomé 55, 46115 Alfara del Patriarca, Valencia, SpainDepartamento de Farmacia, Universidad Cardenal Herrera-CEU, CEU Universities C/Ramón y Cajal s/n, 46115 Alfara del Patriarca, Valencia, SpainDepartamento de Farmacia, Universidad Cardenal Herrera-CEU, CEU Universities C/Ramón y Cajal s/n, 46115 Alfara del Patriarca, Valencia, SpainDepartamento de Farmacia, Universidad Cardenal Herrera-CEU, CEU Universities C/Ramón y Cajal s/n, 46115 Alfara del Patriarca, Valencia, SpainESI International Chair@CEU-UCH, Departamento de Matemáticas, Física y Ciencias Tecnológicas, Universidad Cardenal Herrera-CEU, CEU Universities San Bartolomé 55, 46115 Alfara del Patriarca, Valencia, SpainDepartamento de Farmacia, Universidad Cardenal Herrera-CEU, CEU Universities C/Ramón y Cajal s/n, 46115 Alfara del Patriarca, Valencia, SpainQuinolones are one of the most extensively used therapeutic families of antibiotics. However, the increase in antibiotic-resistant bacteria has rendered many of the available compounds useless. After applying our prediction model of activity against <i>E. coli</i> to a library of 1000 quinolones, two quinolones were selected to be synthesized. Additionally, a series of zwitterionic quinolonates were also synthesized. Quinolones and zwitterionic quinolonates were obtained by coupling the corresponding amine with reagent <b>1</b> in acetonitrile. Antibacterial activity was assessed using a microdilution method. All the compounds presented antibacterial activity, especially quinolones <b>2</b> and <b>3</b>, selected by the prediction model, which had broad-spectrum activity. Furthermore, a new type of zwitterionic quinolonate with antibacterial activity was found. These compounds can lead to a new line of antimicrobials, as the structures, and, therefore, their properties, are easily adjustable in the amine in position 4 of the pyridine ring.https://www.mdpi.com/1424-8247/15/7/818quinoloneantibioticantibiotic-resistant bacteriazwitterionic compounds
spellingShingle Beatriz Suay-García
Jose-Ignacio Bueso-Bordils
Gerardo Antón-Fos
María-Teresa Pérez-Gracia
Antonio Falcó
Pedro Alemán-López
Synthesis of Quinolones and Zwitterionic Quinolonate Derivatives with Broad-Spectrum Antibiotic Activity
Pharmaceuticals
quinolone
antibiotic
antibiotic-resistant bacteria
zwitterionic compounds
title Synthesis of Quinolones and Zwitterionic Quinolonate Derivatives with Broad-Spectrum Antibiotic Activity
title_full Synthesis of Quinolones and Zwitterionic Quinolonate Derivatives with Broad-Spectrum Antibiotic Activity
title_fullStr Synthesis of Quinolones and Zwitterionic Quinolonate Derivatives with Broad-Spectrum Antibiotic Activity
title_full_unstemmed Synthesis of Quinolones and Zwitterionic Quinolonate Derivatives with Broad-Spectrum Antibiotic Activity
title_short Synthesis of Quinolones and Zwitterionic Quinolonate Derivatives with Broad-Spectrum Antibiotic Activity
title_sort synthesis of quinolones and zwitterionic quinolonate derivatives with broad spectrum antibiotic activity
topic quinolone
antibiotic
antibiotic-resistant bacteria
zwitterionic compounds
url https://www.mdpi.com/1424-8247/15/7/818
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