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Mini-Reviews in Medicinal Chemistry

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ISSN (Print): 1389-5575
ISSN (Online): 1875-5607

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Review Article

Nature-Derived Hit, Lead, and Drug-Like Small Molecules: Current Status and Future Aspects Against Key Target Proteins of Coronaviruses

Author(s): Md. Junaid*, Yeasmin Akter, Aysha Siddika, S. M. Abdul Nayeem, Afsana Nahrin, Syeda Samira Afrose, Md. Muzahid Ahmed Ezaj and Muhammad Shaiful Alam

Volume 22, Issue 3, 2022

Published on: 05 August, 2021

Page: [498 - 549] Pages: 52

DOI: 10.2174/1389557521666210805113231

Price: $65

Abstract

Background: COVID-19 pandemic, the most unprecedented event of the year 2020, has brought millions of scientists worldwide in a single platform to fight against it. Though several drugs are now in the clinical trial, few vaccines are available on the market already, but the lack of an effect of those is making the situation worse.

Aim of the study: In this review, we demonstrated comprehensive data of natural antiviral products showing activities against different proteins of Human Coronaviruses (HCoV) that are responsible for its pathogenesis. Furthermore, we categorized the compounds into the hit, lead, and drug based on the IC50/EC50 value, drug-likeness, and lead-likeness test to portray their potentiality to be a drug. We also demonstrated the present status of our screened antiviral compounds with respect to clinical trials and reported the lead compounds that can be promoted to clinical trial against COVID-19.

Methods: A systematic search strategy was employed focusing on Natural Products (NPs) with proven activity (in vitro, in vivo, or in silico) against human coronaviruses, in general, and data were gathered from databases like PubMed, Web of Science, Google Scholar, SciVerse, and Scopus. Information regarding clinical trials retrieved from the Clinical Trial Database.

Results: Total "245" natural compounds were identified initially from the literature study. Among them, Glycyrrhizin, Caffeic acid, Curcumin is in phase 3, and Tetrandrine, Cyclosporine, Tacrolimus, Everolimus are in phase 4 clinical trial. Except for Glycyrrhizin, all compounds showed activity against COVID-19.

Conclusion: In summary, our demonstrated specific small molecules with lead and drug-like capabilities clarified their position in the drug discovery pipeline and proposed future research against COVID-19.

Keywords: COVID-19, HCoV, natural products, in vivo, in vitro, in silico.

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