abstract |
This invention relates to a method for manufacturing 9-ethyl-6,6-dimethyl-8-[4-(morpholin-4-yl)piperidin-1-yl]-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile, and is industrially preferable, allowing an objective substance to be obtained in high yield more safely and easily than the conventional method. |