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

Figure 3

Promising alkaloids in the active site of human ACE2 (PDB ID: 1R42). : hydrogen bonding, : pi-pi stacked, : alkyl/pi-alkyl, : pi-sigma, : pi-anion, and : carbon hydrogen bond. Lisinopril, a prototype ACEI, is also shown within the active site.

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