(E)-3-{(4S,5S)-5-[(1R,2R)-2-(tert-Butyl-dimethyl-silanyloxy)-2-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-1-methyl-ethyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-acrylic acid methyl ester 在
potassium fluoride 、
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
以45%的产率得到3-[(3aS,5R,6S,6aS)-5-((R)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2,2,6-trimethyl-dihydro-furo[2,3-d][1,3]dioxol-3a-yl]-propionic acid methyl ester