{4-[2,8-bis-(tert-butyldimethylsilanyloxy)-11,12-dihydro-5H-6,13-dioxabenzo[3,4]cyclohepta[1,2-a]naphthalen-5-yl]phenoxy}acetic acid methyl ester 在
吡啶 、
氢氟酸 作用下,
以
乙腈 为溶剂,
以91%的产率得到[4-(2,8-dihydroxy-11,12-dihydro-5H-6,13-dioxa-benzo[3,4]cyclohepta[1,2-a]naphthalen-5-yl)phenoxy]acetic acid methyl ester