Berubicin
Berubicin is a 4'-O-benzylated analogue of the anthracycline derivative doxorubicin, with potential antineoplastic activity. Berubicin intercalates into DNA and interrupts topoisomerase II activity, resulting in the inhibition of DNA replication and repair, as well as RNA and protein synthesis. Unlike other anthracycline derivatives, this agent crosses the blood-brain barrier (BBB) and can circumvent P glycoprotein/MRP1-mediated efflux.