| abstract |
An antitumor agent, a medicine that is useful for the treatment or prevention of digestive cancer, leukemia, pituitary tumor, small cell lung cancer, thyroid and neuroastrocytic cancer, the antitumor agent contains as an active ingredient, either a 1,5-benzodiazepine derivative represented by the general formula (1): (wherein R1 represents C1-6 alkyl; R2 represents phenyl or cyclohexyl; and Y represents a single bond or C1-4 alkylene), or a pharmaceutically acceptable salt thereof. |