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Table 2 NA inhibition activity of compounds 1–22

From: Polyphenolic glycosides isolated from Pogostemon cablin (Blanco) Benth. as novel influenza neuraminidase inhibitors

Compound IC50 (μ mol/ml) Compound IC50 (μ mol/ml) Compound IC50 (μ mol/ml)
1 8.40 ± 1.20 9 6.08 ± 0.20 17 4.69 ± 0.29
2 3.87 ± 0.19 10 6.53 ± 0.38 18 3.29 ± 0.04
3 11.62 ± 0.48 11 3.60 ± 0.02 19 2.74 ± 0.03
4 10.99 ± 1.15 12 2.99 ± 0.12 20 2.12 ± 0.04
5 10.93 ± 0.48 13 7.87 ± 0.13 21 32.67 ± 4.73
6 19.94 ± 1.95 14 3.30 ± 0.12 22 4.70 ± 0.05
7 >200 15 3.64 ± 0.17   
8 6.32 ± 0.38 16 2.27 ± 0.09 Zanamivir 0.93 ± 0.02
  1. Zanamivir was the positive control; each value represents the mean ± SD (n = 3)