2-(三甲硅基)乙醇 、
2,2-dimethyl-propionic acid 7-[7-(2-benzyloxy-ethyl)-9-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-4,4,8-trimethyl-1,6-dioxa-spiro[4.5]dec-2-yl]-3,5-bis-(tert-butyl-dimethyl-silanyloxy)-7-methoxy-2,4-dimethyl-heptyl ester 在
吡啶 、
三氯化磷 、
双氧水 作用下,
以91%的产率得到[(2S,3S,4R,5R,7R)-7-[(2S,3S,5S,7S,8S,9R)-3-[bis(2-trimethylsilylethoxy)phosphoryloxy]-7-[tert-butyl(dimethyl)silyl]oxy-4,4,8-trimethyl-9-(2-phenylmethoxyethyl)-1,10-dioxaspiro[4.5]decan-2-yl]-3,5-bis[[tert-butyl(dimethyl)silyl]oxy]-7-methoxy-2,4-dimethylheptyl] 2,2-dimethylpropanoate