Table 9. IC₅₀ and EC₅₀ Values of Compounds 103–106 from NV 3CLpro Fluorescence Resonance Energy Transfer (FRET)-Based Assay and NV Replicon Cells, Respectively^a.

cpd	IC50 [μM]	EC50 [μM]
103	0.14 ± 0.2	0.04 ± 0.02
104	2.6 ± 1.5	4.2 ± 2.4
105	0.24 ± 0.1	0.04 ± 0.03
106	35.5 ± 5.7	0.1 ± 0.3

^aData taken from Prior et al.¹⁸⁹