Synthesis and carbonic anhydrase activating properties of a series of 2-amino-imidazolines structurally related to clonidine1

The Carbonic Anhydrase (CA, EC 4.2.1.1) activating properties of histamine have been known for a long time. This compound has been extensively modified but only in few instances the imidazole ring has been replaced with other heterocycles. It was envisaged that the imidazoline ring could be a bioiso...

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Main Authors: Niccolò Chiaramonte, Soumia Maach, Caterina Biliotti, Andrea Angeli, Gianluca Bartolucci, Laura Braconi, Silvia Dei, Elisabetta Teodori, Claudiu T. Supuran, Maria Novella Romanelli
Format: Article
Language:English
Published: Taylor & Francis Group 2020-01-01
Series:Journal of Enzyme Inhibition and Medicinal Chemistry
Subjects:
Online Access:http://dx.doi.org/10.1080/14756366.2020.1749602
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author Niccolò Chiaramonte
Soumia Maach
Caterina Biliotti
Andrea Angeli
Gianluca Bartolucci
Laura Braconi
Silvia Dei
Elisabetta Teodori
Claudiu T. Supuran
Maria Novella Romanelli
author_facet Niccolò Chiaramonte
Soumia Maach
Caterina Biliotti
Andrea Angeli
Gianluca Bartolucci
Laura Braconi
Silvia Dei
Elisabetta Teodori
Claudiu T. Supuran
Maria Novella Romanelli
author_sort Niccolò Chiaramonte
collection DOAJ
description The Carbonic Anhydrase (CA, EC 4.2.1.1) activating properties of histamine have been known for a long time. This compound has been extensively modified but only in few instances the imidazole ring has been replaced with other heterocycles. It was envisaged that the imidazoline ring could be a bioisoster of the imidazole moiety. Indeed, we report that clonidine, a 2-aminoimidazoline derivative, was found able to activate several human CA isoforms (hCA I, IV, VA, VII, IX, XII and XIII), with potency in the micromolar range, while it was inactive on hCA II. A series of 2-aminoimidazoline, structurally related to clonidine, was then synthesised and tested on selected hCA isoforms. The compounds were inactive on hCA II while displayed activating properties on hCA I, VA, VII and XIII, with KA values in the micromolar range. Two compounds (10 and 11) showed some preference for the hCA VA or VII isoforms.
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spelling doaj.art-10709256ba384d548bce6214767605f32022-12-21T20:12:58ZengTaylor & Francis GroupJournal of Enzyme Inhibition and Medicinal Chemistry1475-63661475-63742020-01-013511003101010.1080/14756366.2020.17496021749602Synthesis and carbonic anhydrase activating properties of a series of 2-amino-imidazolines structurally related to clonidine1Niccolò Chiaramonte0Soumia Maach1Caterina Biliotti2Andrea Angeli3Gianluca Bartolucci4Laura Braconi5Silvia Dei6Elisabetta Teodori7Claudiu T. Supuran8Maria Novella Romanelli9Section of Pharmaceutical and Nutraceutical Sciences, Department of Neuroscience, Psychology, Drug Research and Child’s Health, University of FlorenceSection of Pharmaceutical and Nutraceutical Sciences, Department of Neuroscience, Psychology, Drug Research and Child’s Health, University of FlorenceSection of Pharmaceutical and Nutraceutical Sciences, Department of Neuroscience, Psychology, Drug Research and Child’s Health, University of FlorenceSection of Pharmaceutical and Nutraceutical Sciences, Department of Neuroscience, Psychology, Drug Research and Child’s Health, University of FlorenceSection of Pharmaceutical and Nutraceutical Sciences, Department of Neuroscience, Psychology, Drug Research and Child’s Health, University of FlorenceSection of Pharmaceutical and Nutraceutical Sciences, Department of Neuroscience, Psychology, Drug Research and Child’s Health, University of FlorenceSection of Pharmaceutical and Nutraceutical Sciences, Department of Neuroscience, Psychology, Drug Research and Child’s Health, University of FlorenceSection of Pharmaceutical and Nutraceutical Sciences, Department of Neuroscience, Psychology, Drug Research and Child’s Health, University of FlorenceSection of Pharmaceutical and Nutraceutical Sciences, Department of Neuroscience, Psychology, Drug Research and Child’s Health, University of FlorenceSection of Pharmaceutical and Nutraceutical Sciences, Department of Neuroscience, Psychology, Drug Research and Child’s Health, University of FlorenceThe Carbonic Anhydrase (CA, EC 4.2.1.1) activating properties of histamine have been known for a long time. This compound has been extensively modified but only in few instances the imidazole ring has been replaced with other heterocycles. It was envisaged that the imidazoline ring could be a bioisoster of the imidazole moiety. Indeed, we report that clonidine, a 2-aminoimidazoline derivative, was found able to activate several human CA isoforms (hCA I, IV, VA, VII, IX, XII and XIII), with potency in the micromolar range, while it was inactive on hCA II. A series of 2-aminoimidazoline, structurally related to clonidine, was then synthesised and tested on selected hCA isoforms. The compounds were inactive on hCA II while displayed activating properties on hCA I, VA, VII and XIII, with KA values in the micromolar range. Two compounds (10 and 11) showed some preference for the hCA VA or VII isoforms.http://dx.doi.org/10.1080/14756366.2020.1749602carbonic anhydraseactivatorclonidinehistamineimidazoline
spellingShingle Niccolò Chiaramonte
Soumia Maach
Caterina Biliotti
Andrea Angeli
Gianluca Bartolucci
Laura Braconi
Silvia Dei
Elisabetta Teodori
Claudiu T. Supuran
Maria Novella Romanelli
Synthesis and carbonic anhydrase activating properties of a series of 2-amino-imidazolines structurally related to clonidine1
Journal of Enzyme Inhibition and Medicinal Chemistry
carbonic anhydrase
activator
clonidine
histamine
imidazoline
title Synthesis and carbonic anhydrase activating properties of a series of 2-amino-imidazolines structurally related to clonidine1
title_full Synthesis and carbonic anhydrase activating properties of a series of 2-amino-imidazolines structurally related to clonidine1
title_fullStr Synthesis and carbonic anhydrase activating properties of a series of 2-amino-imidazolines structurally related to clonidine1
title_full_unstemmed Synthesis and carbonic anhydrase activating properties of a series of 2-amino-imidazolines structurally related to clonidine1
title_short Synthesis and carbonic anhydrase activating properties of a series of 2-amino-imidazolines structurally related to clonidine1
title_sort synthesis and carbonic anhydrase activating properties of a series of 2 amino imidazolines structurally related to clonidine1
topic carbonic anhydrase
activator
clonidine
histamine
imidazoline
url http://dx.doi.org/10.1080/14756366.2020.1749602
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