2,2-Dimethyl-propionic acid (2S,3S,4R,5S)-4-allyl-3-(tert-butyl-dimethyl-silanyloxy)-5-hydroxy-2-methoxymethoxy-2-methyl-decyl ester 在
2,6-二丁基-4-甲基吡啶 、
二甲基溴化硼 作用下,
以
二氯甲烷 为溶剂,
以91%的产率得到2,2-Dimethyl-propionic acid (4S,5S,6R,7S)-6-allyl-5-(tert-butyl-dimethyl-silanyloxy)-4-methyl-7-pentyl-[1,3]dioxepan-4-ylmethyl ester