ANTITUMOR AGENT

摘要

An antitumor agent, a medicine, which is useful for the treatment or prevention of digestive cancer, leukemia, pituitary tumor, small-cell lung cancer, thyroid cancer, and neuroastrocytic tumor. The antitumor agent contains as an active ingredient either a 1,5-benzodiazepine derivative represented by the general formula (1): (wherein R<SUP>1</SUP> represents C<SUB>1-6</SUB> alkyl; R<SUP>2</SUP> represents phenyl or cyclohexyl; and Y represents a single bond or C<SUB>1-4</SUB> alkylene) or a pharmaceutically acceptable salt thereof.