abstract |
A compound having excellent antitumor activity is provided. A chromenoindole derivative (A) represented by the formula (A) or a pharmaceutically acceptable salt thereof. In the formula (A), R 1 is a halogen, an alkyl group or an alkoxy group, n is an integer of 0 to 4, and R 2 is a specific substituted amino group or a cyclic amino group. [Selection figure] None |