6-[2-(tert-Butyl-diphenyl-silanyloxy)-2-(2,3-dihydroxy-4,5,7,8,9-pentamethoxy-2,3-dihydro-naphtho[2,3-b]furan-2-yl)-ethyl]-7-hydroxy-8-methoxy-1-oxo-1H-isochromene-3-carboxylic acid methyl ester 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
以95%的产率得到6-[2-(2,3-Dihydroxy-4,5,7,8,9-pentamethoxy-2,3-dihydro-naphtho[2,3-b]furan-2-yl)-2-hydroxy-ethyl]-7-hydroxy-8-methoxy-1-oxo-1H-isochromene-3-carboxylic acid methyl ester