1-[2-[4-[(19R)-5,15-bis[[tert-butyl(dimethyl)silyl]oxy]-8,18-dioxatetracyclo[9.8.0.02,7.012,17]nonadeca-1(11),2(7),3,5,12(17),13,15-heptaen-19-yl]phenoxy]ethyl]pyrrolidine-2,5-dione 在
吡啶 、
氢氟酸 作用下,
以
乙腈 为溶剂,
生成
1-{2-[4-(2,8-dihydroxy-11,12-dihydro-5H-6,13-dioxa-benzo[3,4]cyclohepta[1,2-a]naphthalen-5-yl)phenoxy]ethyl}pyrrolidine-2,5-dione