Some simple geiparvarin analogues, in which the coumarin moiety has be
en replaced with an X-substituted benzene ring, are described. The com
pounds were tested on LoVo cells (human colon carcinoma cell line) and
some of them show a cytotoxicity comparable with that of the prototyp
e. A QSAR analysis was also attempted, but it did not provide satisfac
tory results, mainly because of the limited range of variation of the
biological activity.