6-{1-(tert-Butyl-dimethyl-silanyloxy)-4-[3-(tert-butyl-dimethyl-silanyloxy)-1,4,6-trimethoxy-5,8-dioxo-5,8-dihydro-naphthalen-2-yl]-3-oxo-butyl}-7,8-dihydroxy-1-oxo-1H-isochromene-3-carboxylic acid methyl ester 在
四丁基氟化铵 作用下,
生成 7,8-Dihydroxy-6-[1-hydroxy-4-(3-hydroxy-1,4,6-trimethoxy-5,8-dioxo-5,8-dihydro-naphthalen-2-yl)-3-oxo-butyl]-1-oxo-1H-isochromene-3-carboxylic acid methyl ester