Table 2.

Plant compounds and their antiviral properties.

S. No	Name of the Compound	Structure	Antiviral Property against	Reference
1.	1. FLAVONOIDS		HSV-1 and HSV-2, SARS-CoV-2	[95,97,201]
	1.1. Catechins (Green tea) EGCG and ECG
	1.2. Quercetin (C. longa)		HCV and SARS-CoV-2	[93,99,100]
	1.3. Apigenin (Green tea)		Enterovirus-71, foot and mouth disease virus, HCV, African swine fever virus, and influenza A	[103,104,105]
	1.4. Baicalin (Scutellaria lateriflora)		Enterovirus, dengue virus, respiratory syncytical virus, Newcastle disease virus, HIV, and HBV	[108,110,112,120,202,203]
	1.5. Luteolin (O. sanctum)		SARS-CoV-2, rhesus rota virus, chickenkuniya virus, and Japanese encephalitis virus	[113,114,115,116,120,204]
	1.6. Kaempferol (F. benjamina)		HSV-1, HSV-2, HIV, HCV, H1NI, H9N2, Japanese encephalitis virus, and SARS-CoV-2	[121,123,124,126]
2.	2. ALKALOIDS		Poliomyelitis virus, SARS-CoV (BJ001 and BJ006)	[127,128,132,205]
	2.1. Lycorine (L. radiata)
	2.2. Sophoridine (S. flavescens)		Enterovirus-71 and coxsackievirus	[130,131,206]
3.	3. SAPONINS (A. arvensis)		HSV-1, poliovirus, and SARS-CoV 2	[4,134,135,136,207]
4.	4. LIGNANS		HBV and duck HBV	[139,140,170,171]
	4.1. Nordihydroguairetic acid (P. niruri. L)		DENV, zika virus or West Nile virus, and influenza A virus	[140,141,142,143,144,208]
	4.2 Arctigenin (Arctium lappa)		Influenza A virus and HIV-1	[150,151,152,153,154,209]
	4.3. Yatein (Chamaecyparis obtuse)		HSV-1	[155,156]
	4.4. Diphyllin (Genus-Haplophyllum)		Zika virus and influenza A virus	[157,158,159,160,161,210]
	4.5.Patentiflorin A (J. gendarussa)		Zika virus and HIV	[160,161,162,163,164,211]
	4.6. Clemastanin B (Isatis indigotica)		Influenza A virus	[164,165,166,167]
	4.7. Silymarin C (S. marianum)		HCV	[168,169,212]
5.	5. TANNINS		HSV and HIV	[172,173,174,175]
	5.1. Geraniin (P. amarus)
	5.2. 1,3,4,6-tetra-O-galloyl-β-d-glucose (P. urinaria)
	5.3. Corilagin (P. amarus)