Potential anti-herpes and cytotoxic action of novel semisynthetic digitoxigenin-derivatives - Boff, L; Munkert, J; Ottoni, FM; Zanchett, Schneider NF; Ramos, GS; Kreis, W; de Andrade, SF; Dias de Souza, Filho J; Castro, Braga F; Alves, RJ; Maia, de Pádua R; Oliveira, Simões CM (Planta Medica, 2019)