Hydrochloric Acid → HCID 21849923, compound

Participants

Reaction Steps

The compound of Production Example 24 was treated in the same manner as the one of Production Example 3 to thereby give N-[2-(dimethylamino)ethyl]-3-(4-methylbenzenesulfonamido)-7H-benzo[c]carbazole-8-carboxamide. Then this product was reacted with sodium hydride and ethyl chloroformate in dimethylformamide under ice-cooling to thereby give 5-[2-(dimethylamino)ethyl]-11-(N-etoxycarbonyl-4-methylbenzenesulfonamido)-4H-benzo[c]pyrimido[5,6,1-jk]carbazole-4,6(5H)-dione. Next, this product was treated with a 1 N aqueous solution of sodium hydroxide in a mixture of methanol with tetrahydrofuran (1:1) and then converted into the hydrochloride in a conventional manner followed by recrystallization from ethanol to thereby give the title compound.

Provenance & Evidence