Table 1.

Virus entry inhibitory activity of FIP and its derivatives.

	Chemical structure	IC50 [µM]a)	K D [nM]b)
FIP		2.1	81c)
FIP‐G3r‐NH2		0.25	6.6c)
FIP‐F2pF‐NH2		0.090	16

^a) The values were determined by viral cell infection inhibition assay. The experiments were conducted in triplicate.

^b) The values were determined by surface plasmon resonance assay.

^c) The values are from the previous report (ref. [13]).