“…therapy (Haisma et al, 1992(Haisma et al, , 1994Houba et al, 1996;Bakina et al, 1997;Desbene et al, 1998;Florent et al, 1998;Papot et al, 1998;Leenders et al, 1999) as reviewed extensively (Deonarain and Epenetos, 1994;Dubowchik and Walker, 1999;Huang and Oliff, 2001). These include glucuronidated prodrugs of doxorubicin, daunorubicin, and epirubicin, and these prodrugs have the general structure of anthracycline-spacer-glucuronic acid.…”