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Abstract
SARS-CoV-2 is the third most highly virulent human coronavirus of the 21st century. It is linked with fatal respiratory illness. Currently, there are still no effective treatments of Covid-19. Among many drugs evaluated, few have proven conclusive clinical efficacy. Furthermore, the spread of the disease mandates that ideal medications against Covid-19 be cheap and available worldwide. Therefore, there is a rationale to evaluate whether treatments of natural origin from aromatic and medicinal plants have the ability to prevent and/or treat COVID-19. We evaluated in this study the inhibition of COVID-19 protease by natural plants compounds such as Gossypetin-3'-O-glucoside (G3'G). G3'G has been isolated from the petals of Talipariti elatum Sw. found almost exclusively in Martinique. It has no crystallography or modelisation studies. Antifungal and antioxidant properties are already published. We study its binding affinity so potential inhibition capability against SARS-CoV2 3CLpro mean protease as compared to other previously tested natural or pharmacological molecules by molecular docking. We propose Gossypetin derivatives as good tropical natural compounds candidate that should be further investigated to prevent or treat COVID19.
Highlights
Severe Acute Respiratory Syndrome (SARS) was the first new infectious disease identified in the twenty-first century
We develop a computational method of prediction of best candidate inhibitors of SARS-CoV-2 3-Chymotrypsin-Like Protease (3CLpro) that plays an essential role in replication of the virus, and represents an effectiveness and nontoxic drug target
The computational study that we have carried out confirms the interest of polyphenols in the treatment of SARS-COV2 by inhibition of 3CLpro
Summary
Severe Acute Respiratory Syndrome (SARS) was the first new infectious disease identified in the twenty-first century. This acute and often severe, respiratory illness is caused by a new coronavirus, SARS-Coronavirus (SARS- CoV). Between 2002-2003, the first outbreak of SARS reached all five continents by air-travel routes. SARS-CoV is a zoonotic virus that resides in hosts that form its natural reservoir, such as bats. It can infect intermediate hosts, such as small animals (for example, palm civets), before being transmitted to humans. SARS-CoV can infect and replicate in several cell types in humans and cause serious organ injuries [1]
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