5,6,8,9-tetrahydrodibenzo[c,h]acridine

2-[(2-chlorophenyl)methylidene]-3,4-dihydronaphthalen-1-one

2-[(2-fluorophenyl)methylidene]-3,4-dihydronaphthalen-1-one

2-[(3-fluorophenyl)methylidene]-3,4-dihydronaphthalen-1-one

4a-methyl-3,4,9,10-tetrahydrophenanthren-2-one