Table 1 Antiviral activity and cytotoxicity of the 23 compounds on BHK-21 cells were evaluated by EC50 and CC50, and the compounds were ranked according to their SIs (CC50/EC50) in the table.

From: Salvianolic acid A from Salvia miltiorrhiza identified as a cap-dependent endonuclease inhibitor for pathogenic arenaviruses

Name

EC50 (µM) Mean ± SD

CC50 (µM) Mean ± SD

SI

Name

EC50 (µM) Mean ± SD

CC50 (µM) Mean ± SD

SI

Salvianolic acid A

1.2 ± 0.7

375.0 ± 106.0

312.50

Sanggenon C

13.0 ± 5.7

34.4 ± 23.5

2.65

Chebullinic acid

2.1 ± 1.9

241.9 ± 11.5

114.76

Embelin

9.8 ± 3.9

22.0 ± 4.5

2.24

Tannic acid

3.0 ± 1.1

180.4 ± 60.4

60.13

Daunorubicin (hydrochloride)

3.3 ± 0.6

7.2 ± 3.7

2.18

Punicalagin

5.6 ± 0.2

300 ± 212.0

53.57

Doxorubicin (hydrochloride)

2.0 ± 1.1

3.9 ± 3.7

1.95

2-Methoxyestrone

15.0 ± 1.7

455.0 ± 7.1

30.33

Hypericin

1.9 ± 1.6

1.7 ± 2.0

0.89

4’,5-Dihydroxyflavone

16.0 ± 7.4

150 ± 16.1

9.38

Garcinone

>50

26.5 ± 2.6

–

Isoginkgetin

10.3 ± 3.8

96.0 ± 76.0

9.32

5-Hydroxyflavone

>50

>450.0

–

Emodin

17.4 ± 1.1

126.0 ± 7.5

7.24

Vanillyl alcohol

>50

351.2 ± 171.0

–

7-Ethylcamptothecin

0.2 ± 0.1

1.1 ± 0.7

5.50

Coumarin 6

>50

>450.0

–

Deoxycorticosterone

37.1 ± 17.0

204.0 ± 98.0

5.50

Skimmin

>50

397.0 ± 55.0

–

Demethylzeylasteral

3.6 ± 0.6

19.2 ± 0.1

5.33

Pyrrole-2-carboxylic acid

>50

79.4 ± 24.6

–

Gambogic acid

0.8 ± 0.1

2.6 ± 0.7

3.25

Ribavirin

2.3 ± 1.3

29.7 ± 11.4

12.90

  1. Ribavirin was used as a positive control.