(1RS,2RS,5RS,7SR,8RS)-4'-ethyl-3',7,8-trihydroxy-4'-phenylthio-3',4'-dihydrobicyclo<3.3.0>oct-3-ene-2-spiro-2'-furan-5'(2'H)-one 在
间氯过氧苯甲酸 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以17%的产率得到(1RS,2RS,5RS,7SR,8RS)-(E)-4'-ethylidene-3',7,8-trihydroxy-3',4'-dihydrobicyclo<3.3.0>oct-3-ene-2-spiro-2'-furan-5'(2'H)-one