Effects of coumarin derivatives on dihydroorotate deshydrogenase enzyme from leishmania major and on the mast cell degranulation - Vermelho, Roberta Bonassa; Callejon, Daniel Roberto; Feliciano, Patricia Rosa; Contini, Silvia Helena Taleb; Baruffi, Marcelo Dias; Nonato, Maria Cristina; Lopes, João Luís Callegari (International Congress of Pharmaceutical Sciences (CIFARP), 2007)