IC₅₀ values of the new compounds 12–17 against Vero normal cells and selectivity indices against the tumor cells.

Comp.	Vero cells IC50 (μM)	Selectivity index
		HT-29	A549	HCT-116
12	422.29 ± 6.17	24.47	22.50
13	425.65 ± 2.42	15.23	21.95	22.69
14	491.03 ± 4.97	22.05	24.79	16.94
15	389.62 ± 2.95	28.73	21.89	28.15
16	123.28 ± 1.44	6.65	4.97	4.26
17	178.8 ± 1.67	3.79	16.42	19.50