Chemical and Preliminary Analgesic Evaluation of Geraniin and Furosin Isolated from Phyllanthus sellowianus - Miguel, Obdulio G; Calixto, João B; Santos, Adair R S; Messana, Irene; Ferrari, Franco; Filho, Valdir Cechinel; Pizzolatti, Moacir G; Yunes, Rosendo A (Planta Medica, 1996)