Quinoline and Quinazoline Alkaloids against COVID-19: An In Silico Multitarget Approach

Figure 4

Promising alkaloids bound to the SARS-CoV-2 spike glycoprotein binding domain (PDB ID: 6LZG). : hydrogen bonding, : pi-pi stacked, : alkyl/pi-alkyl, : pi-sigma, : pi-anion, and : carbon hydrogen bond.

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