Natural inhibitors for severe acute respiratory syndrome coronavirus 2 main protease from Moringa oleifera, Aloe vera, and Nyctanthes arbor-tristis: molecular docking and ab initio fragment molecular orbital calculations

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Abstract

The novel coronavirus 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread rapidly worldwide, and new drug treatments for COVID-19 are urgently required. To find the potential inhibitors against the main protease (Mpro) of SARS-CoV-2, we investigated the inhibitory potential of naturally occurring compounds from the plants Moringa oleifera, Aloe vera, and Nyctanthes arbor-tristis, using molecular docking, classical molecular mechanics optimizations, and ab initio fragment molecular orbital (FMO) calculations. Of the 35 compounds that we simulated, feralolide from Aloe vera exhibited the highest binding affinity against Mpro. Therefore, we proposed novel compounds based on the feralolide and investigated their binding properties to Mpro. The FMO results indicated that the introduction of a hydroxyl group into feralolide significantly enhances its binding affinity to Mpro. These results provide useful information for developing potent Mpro inhibitors.

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APA

Shaji, D., Suzuki, R., Yamamoto, S., Orihashi, D., & Kurita, N. (2022). Natural inhibitors for severe acute respiratory syndrome coronavirus 2 main protease from Moringa oleifera, Aloe vera, and Nyctanthes arbor-tristis: molecular docking and ab initio fragment molecular orbital calculations. Structural Chemistry, 33(5), 1771–1788. https://doi.org/10.1007/s11224-022-02021-y

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