乙二醇 、 (3aR,6R,7S,8R,12aR)-7,8-Dihydroxy-6,7,8-trimethyl-5,9-dioxo-12-[2-oxo-eth-(E)-ylidene]-decahydro-4,10-dioxa-1-aza-cyclopentacycloundecene-1-carboxylic acid 2,2,2-trichloro-ethyl ester 在
三甲基氯硅烷 作用下,
以
二氯甲烷 为溶剂,
反应 5.0h,
以95%的产率得到(3aR,6R,7S,8R,12aR)-12-[1-[1,3]Dioxolan-2-yl-meth-(E)-ylidene]-7,8-dihydroxy-6,7,8-trimethyl-5,9-dioxo-decahydro-4,10-dioxa-1-aza-cyclopentacycloundecene-1-carboxylic acid 2,2,2-trichloro-ethyl ester