The invention relates to a quinone derivative of the following formula:
which is capable of converting into two alkylating agents upon bioreduction. Substituents A, B, C, and D are as described herein.
A compound which consists of a proactive alkylating moiety containing an electron-withdrawing group, a bioreductive moiety containing at least two double bonds, and a linker joining the proactive alkylating moiety and the bioreductive moiety.