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Di Fruscia P, Carbone A, Bottegoni G, Berti F, Giacomina F, Ponzano S, Pagliuca C, Fiasella A, Pizzirani D, Ortega JA, Nuzzi A, Tarozzo G, Mengatto L, Giampà R, Penna I, Russo D, Romeo E, Summa M, Bertorelli R, Armirotti A, Bertozzi SM, Reggiani A, Bandiera T, Bertozzi F. Discovery and SAR Evolution of Pyrazole Azabicyclo[3.2.1]octane Sulfonamides as a Novel Class of Non-Covalent N-Acylethanolamine-Hydrolyzing Acid Amidase (NAAA) Inhibitors for Oral Administration. J Med Chem 2021; 64:13327-13355. [PMID: 34469137 PMCID: PMC8474119 DOI: 10.1021/acs.jmedchem.1c00575] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Indexed: 12/30/2022]
Abstract
Inhibition of intracellular N-acylethanolamine-hydrolyzing acid amidase (NAAA) activity is a promising approach to manage the inflammatory response under disabling conditions. In fact, NAAA inhibition preserves endogenous palmitoylethanolamide (PEA) from degradation, thus increasing and prolonging its anti-inflammatory and analgesic efficacy at the inflamed site. In the present work, we report the identification of a potent, systemically available, novel class of NAAA inhibitors, featuring a pyrazole azabicyclo[3.2.1]octane structural core. After an initial screening campaign, a careful structure-activity relationship study led to the discovery of endo-ethoxymethyl-pyrazinyloxy-8-azabicyclo[3.2.1]octane-pyrazole sulfonamide 50 (ARN19689), which was found to inhibit human NAAA in the low nanomolar range (IC50 = 0.042 μM) with a non-covalent mechanism of action. In light of its favorable biochemical, in vitro and in vivo drug-like profile, sulfonamide 50 could be regarded as a promising pharmacological tool to be further investigated in the field of inflammatory conditions.
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Affiliation(s)
- Paolo Di Fruscia
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Anna Carbone
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
- Department
of Biological, Chemical and Pharmaceutical Sciences and Technologies
(STEBICEF), University of Palermo, 90123Palermo, Italy
| | - Giovanni Bottegoni
- Computational
and Chemical Biology, Istituto Italiano
di Tecnologia (IIT), 16163Genova, Italy
| | - Francesco Berti
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Francesca Giacomina
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Stefano Ponzano
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Chiara Pagliuca
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Annalisa Fiasella
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Daniela Pizzirani
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Jose Antonio Ortega
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Andrea Nuzzi
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Glauco Tarozzo
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Luisa Mengatto
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Roberta Giampà
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Ilaria Penna
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Debora Russo
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Elisa Romeo
- D3-Validation, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Maria Summa
- Analytical
Chemistry and Translational Pharmacology, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Rosalia Bertorelli
- Analytical
Chemistry and Translational Pharmacology, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Andrea Armirotti
- Analytical
Chemistry and Translational Pharmacology, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Sine Mandrup Bertozzi
- Analytical
Chemistry and Translational Pharmacology, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Angelo Reggiani
- D3-Validation, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Tiziano Bandiera
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
| | - Fabio Bertozzi
- D3-PharmaChemistry, Istituto Italiano di Tecnologia (IIT), 16163Genova, Italy
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