US20020103191A1
University of Texas System
Dibenzofluorene derivatives having a formula selected from the group consisting of and salts thereof have antitumor activity. At least one of R 1 -R 13 in formula (I) or R 1 -R 12 in formula (II) is —R 14 Z. R 14 is a substituted or unsubstituted amino or amido group having from 1-12 carbon atoms, and Z is …