Table 2. Activity of Tested Compounds on T. bruceiTC221 and Balb/3T3 Cells.

compound	EC50T. brucei TC221	(μM) Balb/3T3	SI
H2L1	0.231 ± 0.008	12.51 ± 1.354	55
H2L2	0.189 ± 0.038	0.465 ± 0.013	2.460
1	0.084 ± 0.005	12.322 ± 0.346	>100
2	0.169 ± 0.038	0.349 ± 0.109	2.065
3	4.347 ± 2.610	32.977 ± 0.347	7.586
4	12.763 ± 4.060	17.163 ± 3.448	1.345
suramin	0.023 ± 0.0008	43.912 ± 1.438	>100