Table 2. Biological and physical properties of analogs active against T. cruzi amastigotes.

Compound	T. cruzi IC-50 (μM)	SI	Bzn/Compa	clogP	pKa	Lipinski Rule of 5	PSA (Å2)
1	0.14	147	9.6	3.20	9.20	S	101.45
2	0.15	66	8.9	4.16	8.84	S	110.68
8	1.97	45	0.7	4.56	5.06	S	101.45
16	0.61	236	2.2	2.43	7.31	S	101.45
17	0.14	976	9.6	2.95	7.31	S	101.45
18	0.31	373	4.4	3.22	7.53	S	101.45
20	1.48	66	0.9	4.05	5.06	S	114.34
21	1.74	44	0.8	4.52	5.06	S	114.34
23	1.03	129	1.3	0.99	6.81	S	114.34
24	0.46	208	2.9	1.51	6.81	S	114.34
29	0.17	816	8.0	3.51	9.44	S	88.56
34	0.31	460	4.3	2.60	8.76	S	101.45
35	0.36	200	3.8	5.55	6.87	V (2)	105.55
36	0.32	144	4.2	5.88	6.87	V (2)	105.55
37	0.32	383	4.2	2.63	9.65	S	88.56
38	0.15	634	9.3	5.62	8.79	V (2)	79.77
40	0.34	>562	4.0	2.86	8.33	S	83.01
41	0.41	287	3.3	3.38	8.52	S	83.01
42	0.04	1320	33.8	3.03	7.85	S	83.01
Bnz	1.35*		1.0	1.32		S	92.74

^aBzn/Comp: IC₅₀ of Bnz / IC₅₀ of Comp. PSA: Polar surface area.

^*Median values from 43 measurements in parallel with each compound. All physical properties were predicted by using the Marvin Calculator (www.chemaxon.com).