[(2R,3S,5R)-5-(5-methyl-2,4-dioxopyrimidin-1-yl)-2-(trityloxymethyl)oxolan-3-yl] 2-[(2R,3S,5R)-3-azido-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]ethanesulfonate 在
silica gel 、
三氟乙酸 作用下,
以
甲醇 、
氯仿 为溶剂,
以81%的产率得到2-[(2R,3S,5R)-3-Azido-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-yl]-ethanesulfonic acid (2R,3S,5R)-2-hydroxymethyl-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester