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Bekheit MS, Panda SS, Kariuki BM, Mahmoud SH, Mostafa A, Girgis AS. Spiroindole-containing compounds bearing phosphonate group of potential M pro-SARS-CoV-2 inhibitory properties. Eur J Med Chem 2023; 258:115563. [PMID: 37329713 DOI: 10.1016/j.ejmech.2023.115563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/23/2023] [Accepted: 06/09/2023] [Indexed: 06/19/2023]
Abstract
Microwave-assisted reaction of 3,5-bis((E)-ylidene)-1-phosphonate-4-piperidones 3a‒g with azomethine ylide (produced through interaction of isatins 4 and sarcosine 5) cycloaddition afforded the corresponding (dispiro[indoline-3,2'-pyrrolidine-3',3″-piperidin]-1″-yl)phosphonates 6a‒l in excellent yields (80-95%). Structure of the synthesized agents was evidenced by single crystal X-ray studies of 6d, 6i and 6l. Some of the synthesized agents revealed promising anti-SARS-CoV-2 properties in the viral infected Vero-E6 cell technique with noticeable selectivity indices. Compounds 6g and 6b are the most promising agents synthesized (R = 4-BrC6H4, Ph; R' = H, Cl, respectively) with considerable selectivity index values. Mpro-SARS-CoV-2 inhibitory properties supported the anti-SARS-CoV-2 observations of the potent analogs synthesized. Molecular docking studies (PDB ID: 7C8U) are consistent with the Mpro inhibitory properties. The presumed mode of action was supported by both experimentally investigated Mpro-SARS-CoV-2 inhibitory properties and explained by docking observations.
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Affiliation(s)
- Mohamed S Bekheit
- Department of Pesticide Chemistry, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Siva S Panda
- Department of Chemistry and Physics, Augusta University, Augusta, GA, 30912, USA
| | - Benson M Kariuki
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Sara H Mahmoud
- Center of Scientific Excellence for Influenza Viruses, National Research Centre, Giza, 12622, Egypt
| | - Ahmed Mostafa
- Center of Scientific Excellence for Influenza Viruses, National Research Centre, Giza, 12622, Egypt
| | - Adel S Girgis
- Department of Pesticide Chemistry, National Research Centre, Dokki, Giza, 12622, Egypt.
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Morales-Salazar I, Montes-Enríquez FP, Garduño-Albino CE, García-Sánchez MA, Ibarra IA, Rojas-Aguirre Y, García-Hernández ME, Sarmiento-Silva RE, Alcaraz-Estrada SL, Díaz-Cervantes E, González-Zamora E, Islas-Jácome A. Synthesis of bis-furyl-pyrrolo[3,4- b]pyridin-5-ones via Ugi-Zhu reaction and in vitro activity assays against human SARS-CoV-2 and in silico studies on its main proteins. RSC Med Chem 2023; 14:154-165. [PMID: 36760742 PMCID: PMC9890515 DOI: 10.1039/d2md00350c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 11/11/2022] [Indexed: 11/19/2022] Open
Abstract
An Ugi-Zhu three-component reaction (UZ-3CR) coupled in one pot manner to a cascade process (N-acylation/aza Diels-Alder cycloaddition/decarboxylation/dehydration) was performed to synthesize a series of bis-furyl-pyrrolo[3,4-b]pyridin-5-ones in 45 to 82% overall yields using ytterbium triflate as a catalyst, toluene as a solvent, and microwaves as a heat source. The synthesized molecules were evaluated in vitro against human SARS-CoV-2 through a time-of-addition approach, finding that compound 1e, at a concentration of 10.0 μM, exhibited a significant reduction at the initial infection stages, thus showing prophylactic potential. On the other hand, it was found that compound 1d, at the same concentration, was significantly active when applied post-infection, thus exhibiting a therapeutic profile. Moreover, compound 1f showed both, prophylactic and therapeutic activity. Then, to understand interactions between synthesized compounds and the main proteins related to the virus, docking studies were performed on spike-glycoprotein, main-protease, and Nsp3 protein, finding moderate to strong binding energies, matching accurately with the in vitro results. Additionally, a pharmacophore model was computed behind further rational drug design.
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Affiliation(s)
- Ivette Morales-Salazar
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección Iztapalapa Ciudad de México C.P. 09310 Mexico
| | - Flora P Montes-Enríquez
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección Iztapalapa Ciudad de México C.P. 09310 Mexico
| | - Carlos E Garduño-Albino
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección Iztapalapa Ciudad de México C.P. 09310 Mexico
| | - M A García-Sánchez
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección Iztapalapa Ciudad de México C.P. 09310 Mexico
| | - Ilich A Ibarra
- Laboratorio de Fisicoquímica y Reactividad de Superficies, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México Circuito Exterior S/N, Ciudad Universitaria Coyoacán Ciudad de México C.P. 04510 Mexico
| | - Yareli Rojas-Aguirre
- Departamento de Polímeros, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México Circuito Exterior S/N, Ciudad Universitaria Coyoacán Ciudad de México C.P. 04510 Mexico
| | - Montserrat Elemi García-Hernández
- Departamento de Microbiología e Inmunología, Facultad de Medicina, Veterinaria y Zootecnia, Universidad Nacional Autónoma de México Av. Universidad 3000, Ciudad Universitaria Coyoacán Ciudad de México C.P. 04510 Mexico
| | - Rosa Elena Sarmiento-Silva
- Laboratorio de Virología y Laboratorio Mixto Internacional ELDORADO, Facultad de Medicina, Veterinaria y Zootecnia, Universidad Nacional Autónoma de México Av. Universidad 3000, Ciudad Universitaria Coyoacán Ciudad de México C.P. 04510 Mexico
| | - Sofía Lizeth Alcaraz-Estrada
- División de Medicina Genómica, Centro Médico Nacional 20 de Noviembre, ISSSTE Félix Cuevas 540, Col. Del Valle Sur Benito Juárez Ciudad de México C.P. 03100 Mexico
| | - Erik Díaz-Cervantes
- Departamento de Alimentos, Centro Interdisciplinario del Noreste, Universidad de Guanajuato Tierra Blanca Guanajuato C.P. 37975 Mexico
| | - Eduardo González-Zamora
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección Iztapalapa Ciudad de México C.P. 09310 Mexico
| | - Alejandro Islas-Jácome
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa Av. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A Sección Iztapalapa Ciudad de México C.P. 09310 Mexico
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From Repurposing to Redesign: Optimization of Boceprevir to Highly Potent Inhibitors of the SARS-CoV-2 Main Protease. Molecules 2022; 27:molecules27134292. [PMID: 35807537 PMCID: PMC9268446 DOI: 10.3390/molecules27134292] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/17/2022] [Accepted: 06/29/2022] [Indexed: 11/17/2022] Open
Abstract
The main protease (Mpro) of the betacoronavirus SARS-CoV-2 is an attractive target for the development of treatments for COVID-19. Structure-based design is a successful approach to discovering new inhibitors of the Mpro. Starting from crystal structures of the Mpro in complexes with the Hepatitis C virus NS3/4A protease inhibitors boceprevir and telaprevir, we optimized the potency of the alpha-ketoamide boceprevir against the Mpro by replacing its P1 cyclobutyl moiety by a γ-lactam as a glutamine surrogate. The resulting compound, MG-78, exhibited an IC50 of 13 nM versus the recombinant Mpro, and similar potency was observed for its P1′ N-methyl derivative MG-131. Crystal structures confirmed the validity of our design concept. In addition to SARS-CoV-2 Mpro inhibition, we also explored the activity of MG-78 against the Mpro of the alphacoronavirus HCoV NL63 and against enterovirus 3C proteases. The activities were good (0.33 µM, HCoV-NL63 Mpro), moderate (1.45 µM, Coxsackievirus 3Cpro), and relatively poor (6.7 µM, enterovirus A71 3Cpro), respectively. The structural basis for the differences in activities was revealed by X-ray crystallo-graphy. We conclude that the modified boceprevir scaffold is suitable for obtaining high-potency inhibitors of the coronavirus Mpros but further optimization would be needed to target enterovirus 3Cpros efficiently.
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Frausto-Parada F, Várgas-Rodríguez I, Mercado-Sánchez I, Bazán-Jiménez A, Díaz-Cervantes E, Sotelo-Figueroa MA, García-Revilla MA. Grammatical evolution-based design of SARS-CoV-2 main protease inhibitors. Phys Chem Chem Phys 2022; 24:5233-5245. [PMID: 35167639 DOI: 10.1039/d1cp04159b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A series of SARS-CoV-2 main protease (SARS-CoV-2-Mpro) inhibitors were modeled using evolutive grammar algorithms. We have generated an automated program that finds the best candidate to inhibit the main protease, Mpro, of SARS-CoV-2. The candidates were constructed based on a pharmacophore model of the above-mentioned target; relevant moieties of such molecules were modified using data-basis sets with similar chemical behavior to the reference moieties. Additionally, we used the SMILES language to translate 3D chemical structures to 1D words; then, an evolutive grammar algorithm was used to explore the chemical space and obtain new candidates, which were evaluated via the binding energy of molecular coupling assays as an evaluation function. Finally, sixteen molecules were obtained in 3 runs of our program, three of which show promising binding properties as SARS-CoV-2-Mpro inhibitors. One of them, TTO, maintained its relevant binding properties during 100 ns molecular dynamics experiments. For this reason, TTO is the best candidate to inhibit SARS-CoV-2-Mpro. The software we developed for this contribution is available at the following URL: https://github.com/masotelof/GEMolecularDesign.
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Affiliation(s)
- Francisco Frausto-Parada
- Department of Chemistry, Natural and Exact Sciences Division, University of Guanajuato, Noria Alta S/N, Guanajuato-36050, Mexico.
| | - Ismael Várgas-Rodríguez
- Department of Chemistry, Natural and Exact Sciences Division, University of Guanajuato, Noria Alta S/N, Guanajuato-36050, Mexico.
| | - Itzel Mercado-Sánchez
- Department of Chemistry, Natural and Exact Sciences Division, University of Guanajuato, Noria Alta S/N, Guanajuato-36050, Mexico.
| | - Adán Bazán-Jiménez
- Department of Chemistry, Natural and Exact Sciences Division, University of Guanajuato, Noria Alta S/N, Guanajuato-36050, Mexico.
| | - Erik Díaz-Cervantes
- Departamento de Alimentos, Centro Interdisciplinario del Noreste de la Universidad de Guanajuato, Tierra Blanca, Guanajuato-37975, Mexico
| | - Marco A Sotelo-Figueroa
- 3Department of Organizational Studies, Economical and Administrative Sciences Division, University of Guanajuato, Guanajuato-36000, Mexico.
| | - Marco A García-Revilla
- Department of Chemistry, Natural and Exact Sciences Division, University of Guanajuato, Noria Alta S/N, Guanajuato-36050, Mexico.
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