Table 3.

IC₅₀ values of selected compounds. Displacement assays.

Entry	Compd. X5X9X12	IC50 a (μM) (95% Confident Interval)
8	YWW	25.6 [18.6–35.1]
10	WFF	14.5 [9.4–22.2]
12	FWF	48.6 [31.8–74.3]
14	YWF	14.0 [10.0–19.6]
16	WYF	21.3 [13.9–32.7]
29	FWI	4.6 × 10−2 [1.4 × 10−3–1.5]
32	FIY	30.4 [19.4–47.5]

^a Relative inhibitory concentration 50.