Trypanocidal activity of (−)-cubebin derivatives against free amastigote forms of Trypanosoma cruzi - Souza, V A; Silva, R; Pereira, A C; Royo, V A; Saraiva, J; Souza, G HB; da Silva Filho, A A; Grando, M D; Donate, P M; Bastos, J K; Albuquerque, S; Silva, M LA (Bioorg Med Chem Lett, 2005)