(2S,3S,4R)-4-{(4S,5S,6S)-6-[(R)-2-(tert-Butyl-diphenyl-silanyloxy)-1-methyl-ethyl]-2,2,5-trimethyl-[1,3]dioxan-4-yl}-2-methyl-pentane-1,3-diol 在
camphor-10-sulfonic acid 、
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 4.25h,
生成 (R)-2-{(4S,5S,6R)-2,2,5-Trimethyl-6-[(R)-1-((4R,5S)-2,2,5-trimethyl-[1,3]dioxan-4-yl)-ethyl]-[1,3]dioxan-4-yl}-propan-1-ol