Abstract: | Three new tetracyclic structures, containing the azepine ring, were synthesized: 11,12-dihydro-6H-benzofuro3,2-c]2]benzoazepine-6,11-dione, 5,6,11,12-tetrahydroindolo3,2-c]2]benzoazepine-6,11-dione and 11,12-dihydro-6H-benzofuro3,2-c]2]benzoazepin-6-one. |