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Table 2 Binding affinity of compounds from antiviral plants when docked against nsp16

From: Molecular docking and pharmacokinetic studies of phytocompounds from Nigerian Medicinal Plants as promising inhibitory agents against SARS-CoV-2 methyltransferase (nsp16)

S/N

Compounds

Binding affinity (kcal/mol)

1.

Compound 1

−5.9

2.

1-O-Caffeoylglycerol

−6.8

3.

1-O-pCoumaric acid

−6.1

4.

compound 3

−5.9

5.

Compound 4

−7.2

6.

5-dihydroxy-3-isopreyl flavones

−7.4

7.

5′-hydroxymethyl-1′-(1,2,3,9-tetrahydro

−6.7

8.

compound 6

−6.0

9.

Compound 9

−7.8

10.

Compound 2

−7.4

11.

Compound 14

−6.2

12.

3,4-dihydroxyclerodan-13E-en-15-0ic acid

−7.0

13.

5,7-dihydroxy-3-isoprenyl flavones

−7.7

14.

11,12-dimethyl sageone*

−8.1

15.

Anthocyanidin alkaloid

−6.5

16.

Benzene 1,1′-(oxydiethylidene) bis

−5.9

17.

Caffeic Acid

−6.2

18.

(4-methyl-1-phenyl)-1-phenyl Carbamic acid

−5.8

19.

B-phenethylamine

−4.6

20.

Vasicine

−6.1

21.

Vasicinol

−6.4

22.

Buphanidine

−7.3

23.

Vasicinone

−6.7

24.

Sterculic acid

−4.9

25.

Vittatine

−7.2

26.

Sanguinine

−7.0

27.

Securinine

−6.7

28.

Powelline

−7.3

29.

Asperuloside

−7.4

30.

Glabridin

−7.8

31.

Phyllantine

−6.6

32.

8-O-demethylmaritidine

−6.7

33.

Oxopowelline*

−7.9

34.

Deacetylbowdensine*

−8.0

35.

Andrlycorine

−7.2

36.

Hypaphorine

−6.3

37.

3,4-Epoxyclerodan-13E-en-15-oic acid

−6.9

38.

Andrograpanin

−7.1

39.

5alpha,8alpha-(2-oxokolavenic acid)

−6.5

40.

Epibubbialine

−6.3

41.

Copalic acid

−7.1

42.

Dihydrolycorine

−7.8

43.

Galanthamine

−6.5

44.

Narwedine

−7.1

45.

Undulatine

−7.2

46.

Sageone*

−8.1

47.

Scafficinolide

−6.8

48.

Licochelcone A

−7.3

49.

Licochelcone E

−7.0

50.

Andrographolide*

−7.9

51.

Isobubbialine

−6.0

52.

Verticillatine A

−5.9

53.

Ellagi acid

−7.8

54.

Liquiritigerin

−7.8

55.

Lycorine

−7.8

56.

Oxokolavemic acid

−7.1

57.

p-Coumaric acid

−5.3

58.

Quercetin*

−8.4

59.

S-(+)-N b-methyltryptophan methyl ester

−6.1

60.

SFG#

−7.9

  1. *Phytocompounds with the best binding affinity. #Reference compound