Table 1 A list of phytochemicals reported for potential SARS-CoV-2 inhibitory properties (compiled from [82])

Emodin

Rheum palmatum L.

Inhibiting the SARS-CoV S protein–ACE2 interaction

Luteolin

Rhodiola kirilowii (Regel) Maxim.

Quercetin

Allium cepa L.

Tetra-O-galloyl-b-D-glucose (TGG)

Galla chinensis

3′-(3-Methylbut-2-enyl)-30,4,7-trihydroxyflavane, Broussochalcone and Broussoflavan, Kazinol

Broussonetia papyrifera (L.) L'Hér. ex Vent.

Inhibiting the SARS-CoV 3CL^pro activity

4-Hydroxyderricin, Isobavachalcone, Xanthoangelol

Angelica keiskei (Miq.) Koidz

Betulinic acid

Breynia fruticosa (L.) Müll.Arg.

Dihydrotanshinone I, Methyl tanshinonate, Rosmariquinone, Tanshinone

Salvia miltiorrhiza Bunge

Hesperetin

Isatis indigotica Fortune ex Lindl.

Hirsutenone

Alnus japonica (Thunb.) Steud.

Isoliquiritigenin

Glycyrrhiza Glabra L.

Quercetin

Allium cepa L.

Quercetin-3-b-galactoside

Machilus Zuihoensis Hayata

Savinin

Chamaecyparis obtusa var. formosana

3′0-O-Methyldiplacol, 3′0-O-Methyldiplacone, 4′0-O-Methyldiplacol, 4′0-O-Methyldiplacone, 6-Geranyl-40,5,7-trihydroxy-30,50-Dimethoxyflavanone, Diplacone, Mimulone, Tomentin

Paulownia Tomentosa Steud.

Inhibiting the SARS-CoV PL^pro activity

4′0-O-Methylbavachalcone, Isobavachalcone, Neobavaisoflavone, Psoralidin

Psoralea Corylifolia L.

Broussochalcone, Biphenyl Propanoids, Papyriflavonol

Broussonetia papyrifera (L.) L'Hér. ex Vent.

Cryptotanshinone, Dihydrotanshinone, Methyl tanshinonate, Tanshinone

Salvia miltiorrhiza Bunge

Curcumin

Curcuma longa L.

Hirsutanonol, Hirsutenone, Rubranol, Rubranoside

Alnus japonica (Thunb.) Steud

Isoliquiritigenin

Glycyrrhiza Glabra L.

Kaempferol

Zingiber officinale Roscoe

Xanthoangelol

Angelica keiskei (Miq.) Koidz

Terrestrimine

Tribulus terrestris L.

Myricetin

Camellia sinensis (L.) Kuntze

Inhibiting the SARS-CoV helicase activity

Quercetin

Allium cepa L.

Scutellarein

Scutellaria Baicalensis Georgi