甲基碘化镁 、
(2S,6R,8S,10S)-8-[2-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-10-(4-methoxy-benzyloxy)-2-[2-(4-methoxy-benzyloxy)-ethyl]-1,7-dioxa-spiro[5.5]undecan-4-one 以
乙醚 为溶剂,
反应 5.0h,
以66%的产率得到(2S,4S,6R,8S,10S)-8-[2-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-10-(4-methoxy-benzyloxy)-2-[2-(4-methoxy-benzyloxy)-ethyl]-4-methyl-1,7-dioxa-spiro[5.5]undecan-4-ol