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Combinatorial Chemistry & High Throughput Screening

Author(s): Fahad M. Almutairi, Rafat M. Mohareb*, Abdo A. Elfiky, Mahmoud A. Abdelaziz, Wagnat W. Wardakhan, Mervat S. Mohamed and Ali S. Abdelhameed

DOI: 10.2174/1386207325666220829111236

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Synthesis, Molecular Docking, c-Met Inhibitions of 2,2,2-Trichloroethylidene- cyclohexane-1, 3-dione Derivatives Together with their Application as Target SARS-CoV-2 main Protease (Mpro) and as Potential anti-COVID-19

Page: [1437 - 1449] Pages: 13

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Abstract

Background: The lack of anti-COVID-19 treatment to date warrants urgent research into potential therapeutic targets. Virtual drug screening techniques enable the identification of novel compounds that target the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Main Protease (Mpro).

Objective: The binding of the halogenated compounds to Mpro may inhibit the replication and transcription of SARS-CoV-2 and, ultimately, stop the viral life cycle. In times of dire need for anti- COVID-19 treatment, this study lays the groundwork for further experimental research to investigate these compounds' efficacy and potential medical uses to treat COVID-19.

Methods: New heterocyclic compounds were synthesized through the first reaction of cyclohexane- 1, 3-dione (1a) or dimedone (1b) with trichloroacetonitrile (2) to give the 2,2,2-trichloroethylidene) cyclohexane-1,3-dione derivatives 3a and 3b, respectively. The latter compounds underwent a series of heterocyclization reactions to produce biologically active compounds.

Results: Novel compounds, including fused thiophene, pyrimidine and pyran derivatives, were synthesized and tested against human RNA N7-MTase (hRNMT) and selected viral N7-MTases such as SARS-CoV nsp14 and Vaccinia D1-D12 complex to evaluate their specificity and their molecular modeling was also studied in the aim of producing anti-COVID-19 target molecules.

Conclusion: The results showed that compounds 10a, 10b, 10c, 10e, 10f, 10g and 10h showed high % inhibitions against SARs-Covnsp 14. Whereas compounds 5a, 7a, 8b, 10a, 10b, 10c and 10i showed high inhibitions against hRNMT. This study explored the binding affinity of twenty-two halogenated compounds to the SARS-CoV-2 MPro and discovered fifteen compounds with higher binding affinity than Nelfinavir, of which three showed remarkable results. c-Met kinase inhibitions of 10a, 10f, 10g and 10h showed that all compounds exhibited higher inhibitions than the reference Foretinib.

Keywords: Trichloroethylidene, SARS-CoV-2, Corona virus, Main protease, Mpro, Molecular Docking

Graphical Abstract

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