Density functional theory, molecular dynamics, and AlteQ studies of baimantuoluoamide A and baimantuoluoamide B to identify potential inhibitors of M$^{\text{pro}}$ proteins: a novel target for the treatment of SARS COVID-19

COVID-19 has resulted in epidemic conditions over the world. Despite efforts by scientists from all over the world to develop an effective vaccine against this virus, there is presently no recognized cure for COVID-19. The most succeed treatments for various ailments come from natural components found in medicinal plants, which are also crucial for the development of new medications. This study intends to understand the role of the baimantuoluoamide A and baimantuoluoamide B molecules in the treatment of Covid19. Initially, density functional theory (DFT) used to explore their electronic potentials along with the Becke3–Lee–Yang–Parr (B3LYP) 6-311 + $G(d,p)$ basis set. A number of characteristics, including the energy gap, hardness, local softness, electronegativity, and electrophilicity, have also been calculated to discuss the reactivity of molecules. Using natural bond orbital, the title compound's bioactive nature and stability were investigated. Further, both compounds potential inhibitors with main protease (M$^{\text{pro}}$) proteins, molecular dynamics simulations and AlteQ investigations also studied.