2,3,4,5-tetra-O-acetyl-D-glucopyranose 、
5-chloro-4,6-bis-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-2-fluoropyrimidine 在
15-冠醚-5 、 sodium hydride 作用下,
以
二氯甲烷 为溶剂,
反应 0.25h,
以49%的产率得到Acetic acid (2S,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-[5-chloro-2,6-bis-((2S,3R,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-pyrimidin-4-yloxy]-tetrahydro-pyran-3-yl ester