在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
以74%的产率得到[(4R,5S)-5-[(4S,5R)-2,2-dimethyl-5-phenylmethoxycarbonyl-1,3-dioxolan-4-yl]-2,2-dimethyl-1,3-dioxolan-4-yl]methyl (4R,5S)-5-[(4S,5R)-5-(hydroxymethyl)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-1,3-dioxolane-4-carboxylate