Acetic acid 1'-acetoxy-4,4'-dihydroxy-8,8'-dimethoxy-6,6'-dimethyl-[2,2']binaphthalenyl-1-yl ester

1,6-dihydroxy-10-methoxy-8-methylnaphthacene-5,12-dione

4,4',8,8'-Tetramethoxy-6,6'-dimethyl-2,2'-binaphthyliden-1,1'-dion

Acetic acid 4,1',4'-triacetoxy-8,8'-dimethoxy-6,6'-dimethyl-[2,2']binaphthalenyl-1-yl ester

Acetic acid 1'-acetoxy-8,8'-dimethoxy-6,6'-dimethyl-4,4'-bis-trifluoromethanesulfonyloxy-[2,2']binaphthalenyl-1-yl ester