7,8-Bis-benzyloxy-6-[1-hydroxy-4-(3-hydroxy-1,4,5,6,8-pentamethoxy-naphthalen-2-yl)-3-oxo-butyl]-1-oxo-1H-isochromene-3-carboxylic acid methyl ester

7,8-Bis-benzyloxy-1-oxo-6-[3-(1,4,5,6,8-pentamethoxy-3-triethylsilanyloxy-naphthalen-2-ylmethyl)-4,5-dihydro-isoxazol-5-yl]-1H-isochromene-3-carboxylic acid methyl ester

7,8-Bis-benzyloxy-6-{1-(tert-butyl-dimethyl-silanyloxy)-4-[3-(tert-butyl-dimethyl-silanyloxy)-1,4,5,6,8-pentamethoxy-naphthalen-2-yl]-3-oxo-butyl}-1-oxo-1H-isochromene-3-carboxylic acid methyl ester

6-formyl-7,8-dihydroxy-1-oxo-1H-isochromene-3-carboxylic acid methyl ester

isocoumarin