2-[[(2R,3R,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-bis(triethylsilyloxy)oxolan-2-yl]methylcarbamoyloxy]ethyl N-[[(2R,3R,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-bis(triethylsilyloxy)oxolan-2-yl]methyl]carbamate 在
溶剂黄146 作用下,
以
四氢呋喃 、
水 为溶剂,
反应 9.0h,
以98%的产率得到[(2R,3S,4R,5R)-5-(2,4-Dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-3,4-dihydroxy-tetrahydro-furan-2-ylmethyl]-carbamic acid 2-[(2R,3S,4R,5R)-5-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-3,4-dihydroxy-tetrahydro-furan-2-ylmethylcarbamoyloxy]-ethyl ester