Table 1. Evaluation of the anti-amastigote activity in Leishmania amazonensis and cytotoxicity with mouse peritoneal macrophages Swiss.

Compounds	IC50-AMA (μmoL L-1)*	CC50 (Peritoneal Macrophages) (μmoL L-1)*	IS
RP1	1.25±0.70	>100±0.02	80
Fc-RP1	0.25±0.38	17.3±0.03	69
Ferrocene carboxylic acid	4.4±0.91	>100 ±0.03	22
Amphotericin B	0.63±1.17	17.73±0.05	28

*Results are expressed by the mean of the duplicates plus the standard deviation.