Steroidal saponins from the roots of Solanum sisymbriifolium Lam. (Solanaceae) have inhibitory activity against dengue virus and yellow fever virus - Figueiredo, G. G.; Coronel, O. A.; Trabuco, Amanda Cristina; Bazán, D. E.; Russo, R. R.; Alvarenga, N. L.; Quintana, Victor Hugo Aquino (Brazilian Journal of Medical and Biological Research, 2021)