ARYLSULFONYLIMIDAZOLONE DERIVATIVES AS AN ANTITUMOR AGENT

摘要

The present invention relates to a novel arylsulfonylimidazolone derivative represented by formula (I) which shows a superior antineoplastic activity in contrast to the known sulfonylurea antitumor agents as well as little side effect; and its pharmaceutically acceptable salt and stereoisomer, in which --, R1 and R2 are as defined in the specification.