5,6-dihydro-6,11-dioxomorphanthridine
10-((4-methoxyphenylsulphonyloxy)imino)-10H-anthracen-9-one
10-((4-methoxybenzyloxy)imino)-10H-anthracen-9-one
10-((3-hydroxy-4-methoxybenzyloxy)imino)-10H-anthracen-9-one
10-((4-chlorobenzyloxy)imino)-10H-anthracen-9-one