Rearranged Jatrophane-Type Diterpenes from Euphorbia Species. Evaluation of their Effects on the Reversal of Multidrug Resistance - Madureira, Ana M; Ferreira, Maria-José U; Gyémánt, Nora; Ugocsai, Katalin; Ascenso, José R; Abreu, Pedro M; Hohmann, Judit; Molnár, Joseph (Planta Medica, 2004)