methyl 4-acetyl-6-(1,4-dimethoxy-2-naphthoyl)cyclohex-3-ene-1-carboxylate

methyl 6-(1,4-dimethoxy-2-naphthoyl)-4-(2-methyl-1,3-dithiolan-2-yl)cyclohex-3-ene-1-carboxylate

2-acetyl-1,2,3,4-tetrahydro-12-bromonaphtacene-6,11-dione

8-acetyl-6-bromo-11-methoxy-7,8,9,10-tetrahydrotetracene-5,12-dione

6-bromo-11-methoxy-8-(2-methyl-1,3-dithiolan-2-yl)-7,8,9,10-tetrahydrotetracene-5,12-dione