Table 4 Chemical structures and bioactivities of compounds 18e and 24a–d

From: An orally available Mpro/TMPRSS2 bispecific inhibitor with potent anti-coronavirus efficacy in vivo

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Chemical modifications in R3

Compound

R3

Mpro (nM)

TMPRSS2 (μM)

18e

233.3 ± 2.2

3.42 ± 0.08

24a

159.2 ± 1.9

18.70 ± 3.63

24b

155.7 ± 1.0

3.69 ± 0.81

24c

69.4 ± 0.8

61.03 ± 3.02

24d (TMP1)

312.5 ± 5.7

1.28 ± 0.43