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Chagas disease infects approximately seven million people worldwide. Benznidazole is effective only in the acute phase of the disease, with an average cure rate of 80% between acute and recent cases. Therefore, there is an urgent need to find new bioactive substances that can be effective against parasites without causing so many complications to the host. In this study, the triterpene 3β-6β-16β-trihydroxilup-20 (29)-ene (CLF-1) was isolated from  Combretum leprosum , and its molecular structure was determined by NMR and infrared spectroscopy. The CLF-1 was also evaluated  in vitro  and  in silico  as potential trypanocidal agent against epimastigote and trypomastigote forms of  Trypanosoma cruzi  (Y strain). The CLF-1 demonstrated good results highlighted by lower IC 50  (76.0   ±   8.72   µM, 75.1   ±   11.0   µM, and 70.3   ±   45.4   µM) for epimastigotes at 24, 48 and 72   h, and LC 50  (71.6   ±   11.6   µM) for trypomastigotes forms. The molecular docking study shows that the CLF-1 was able to interact with important TcGAPDH residues, suggesting that this natural compound may preferentially exert its effect by compromising the glycolytic pathway in  T. cruzi . The ADMET study together with the MTT results indicated that the CLF-1 is well-absorbed in the intestine and has low toxicity. Thus, this work adds new evidence that CLF-1 can potentially be used as a candidate for the development of new options for the treatment of Chagas disease. Communicated by Ramaswamy H. Sarma

Antiproliferative activity on Trypanosoma cruzi (Y strain) of the triterpene 3β,6β,16β-trihidroxilup-20 (29)-ene isolated from Combretum leprosum