Background:

Duocarmycin TM is an exceptionally potent antitumor antibiotic.

[1]. Dale L. Boger, et al. Critical Role of the Linking Amide in CC-1065 and the Duocarmycins: Implications on the Source of DNA Alkylation Catalysis. J. Am. Chem. Soc. 1998, 120, 11554-11557.