氯甲酸苄酯 、
(R)-3-Tetradecanoyloxy-tetradecanoic acid (2S,3R,4R,5S,6R)-2-benzhydryloxycarbonylmethoxy-3-(2,2-difluoro-tetradecanoylamino)-5-hydroxy-6-hydroxymethyl-tetrahydro-pyran-4-yl ester 在
吡啶 作用下,
以
四氢呋喃 为溶剂,
反应 1.0h,
以90%的产率得到(R)-3-Tetradecanoyloxy-tetradecanoic acid (2S,3R,4R,5S,6R)-2-benzhydryloxycarbonylmethoxy-6-benzyloxycarbonyloxymethyl-3-(2,2-difluoro-tetradecanoylamino)-5-hydroxy-tetrahydro-pyran-4-yl ester