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MS_Anthraquinones_Mpro_ChemRxiv.pdf (1.16 MB)

Naturally Occurring Anthraquinones as Potential Inhibitors of SARS-CoV-2 Main Protease: A Molecular Docking Study

submitted on 04.05.2020, 18:03 and posted on 07.05.2020, 07:28 by Sourav Das, Atanu Singha Roy
Background: The novel coronavirus (COVID-19) has quickly spread throughout the globe, affecting millions of people. The World Health Organization (WHO) has recently declared this infectious disease as a pandemic. At present, several clinical trials are going on to identify possible drugs for treating this infection. SARS-CoV-2 Mpro is one of the most critical drug targets for the blockage of viral replication. Method: The blind molecular docking analyses of natural anthraquinones with SARS-CoV-2 Mpro were carried out in an online server, SWISSDOCK, which is based on EADock DSS docking software. Results: Blind molecular docking studies indicated that several natural antiviral anthraquinones could prove to be effective inhibitors for SARS-CoV-2 Mpro of COVID-19 as they bind near the active site having the catalytic dyad, HIS41 and CYS145 through non-covalent forces. The anthraquinones showed less inhibitory potential as compared to the FDA approved drug, remdesivir.

Conclusion: Among the natural anthraquinones, alterporriol Q could be the most potential inhibitor of SARS-CoV-2 Mpro among the natural anthraquinones studied here, as its ∆G value differed from that of remdesivir only by 0.51 kcal/ mol. The uses of these alternate compounds might be favorable for the treatment of the COVID-19.


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Email Address of Submitting Author


National Institute of Technology Meghalaya



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Declaration of Conflict of Interest

No conflict of interest

Version Notes

Version 1 (initial)


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