Fig. 6
Binding modes of different repurposed drugs in the substrate binding region of SARS-CoV-2 3CLpro (a) flavanoids and biflavonoid (7,8 DHF (purple), apigenin (pink), luteolin (orange), quercitin (green), amentoflavone (grey), bilobetin (brown) and ginkgetin (white) (b) anti-malarial (chloroquine (green), hydroxychloroquine (golden yellow) and artemisinin (blue) (c) anti-viral remdesivir (yellow), darunavir (blue), lopinavir (red), galidesivir (dark pink), favipiravir (light blue), ritonavir (light pink) and umifenovir (green) and d vitamins [vitamin C (cyan), vitamin D (golden orange) and vitamin E (pink)]