Research Article

Alkaloids from Cryptolepis sanguinolenta as Potential Inhibitors of SARS-CoV-2 Viral Proteins: An In Silico Study

Table 1

Comparison of binding free energies () and ligand efficiencies of compounds in the literature and this study for validation purposes.

LigandFree energy of binding, (kcal/mol)Ligand efficiency ()
MproMproRdRpRdRpRdRpolMproMproRdRpRdRpRdRpol

N3-7.3#-8.371-0.15-0.17
Nelfinavir-8.3-10.721-0.21-0.27
Luteolin-7-glucoside-8.1-8.171-0.25-0.39
Curcumin-7.0-7.051-0.26-0.26
ATP-7.4-7.22-7.4-0.27-0.27
Remdesivir-6.9-6.42-7.3-0.17-0.17
Lopinavir-8.7-9.411-7.8-8.3-0.19-0.20-0.17-0.18
Hydroxychloroquine-6.2-5.4-5.9-0.27-0.24-0.26

Data extracted from literature; of native ligand using DINC 2.0; 1Data values reported from Reference [44]; 2Data values reported from Reference [54].