Oligopeptide-like derivatives structurally related to the antitumor ag
ent tallimustine, where one or two pyrrole rings were replaced by pyra
zole or thiazole rings and bearing benzoyl nitrogen mustard or bromoac
ryloyl moieties were synthesized and evaluated in vitro and in vivo ag
ainst L1210 murine leukemia. Compounds 9 and 12 showed antitumor activ
ity higher than or comparable with that of tallimustine. Copyright (C)
1996 Elsevier Science Ltd