Table 1.

Summary of the approved antiviral drugs.

#	Cpd.	Structure/IUPAC name	Biological activity
1	Emodin		Inhibitor of SARS-CoV entry [7]
2	Chloroquine		Treatment of SARS-CoV-2 [45]
3	hydroxychloroquine		Treatment of SARS-CoV-2 [45]
4	Remdesivir		Antiviral drug [46]
5	Aminoquinoline		Used in malaria treatment [9]
6	Azithromycin		Broad spectrum antibiotic [12]
7	ethyl (3S)-1-(2a,8a-di(furan-2-yl)-2-oxo-1,2,2a,8a-tetrahydroazeto[2,3-b]quinoxalin-6-yl)piperidine-3-carboxylate		Cyclophilin D (CypD) inhibitors [47]
8	2,3-di(furan-2-yl)-6-ethoxycarbonylamino quinoxaline
9	2,3-di(furan-2-yl)-6-((R)-3-ethoxycarbonyl-piperidino) carbonylamino quinoxaline
10	Cyclosporine A		In vitro effective against HIV, HCV and HBV replication [48,49]
11	Lopinavir		(HIV protease inhibitors) [4]
12	Ritonavir
13	Favipiravir		SARS-CoV-2 antiviral agent [4]
14	Ribavirin		HCV antiviral [37]
15	Tideglusib		Antiviral agent [10]
16	Disulfiram		FDA-approved drugs [10]
17	Carmofur
18	Ebselen		Currently in clinical trials [10]
19	Cinanserin		Antiviral drug [10]