5-methoxy-3-(6,6-dimethyl-5-oxoheptanoyl)-1,4-naphthoquinone

1,5-dimethoxy-3-(6,6-dimethyl-5-oxoheptanoyl)-4-naphthol

[9-(tert-Butyl-dimethyl-silanyloxy)-3-(4,4-dimethyl-3-oxo-pentyl)-10-hydroxy-5-methoxy-4-oxo-1,2,3,4-tetrahydro-anthracen-2-yl]-acetic acid methyl ester

methyl (6a-SR,9-RS,10-SR,10a-RS)-9-t-butyldimethylsilyloxy-5,9-dihydroxy-4-methoxy-6-oxo-6,6a,7,8,9,10,10a,11-octahydronaphthacene-10-carboxylate

methyl 4-(4'-hydroxy-5'-methoxy-3'-(6'',6''-dimethyl-5''-oxoheptanoyl)-1'-oxo-1',2-dihydronaphth-2'-yl)-2-butenoate