(3aR,4S,6R,6aS)-6-[5-(benzylsulfanyl)-7-chloro-3H-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl]-2,2-dimethylhexahydrocyclopenta[d][1,3]dioxol-4-ol 、
2-hydroxyethyl trifluoromethanesulfonate 在
甲基氯化镁 作用下,
以
四氢呋喃 为溶剂,
以90 %的产率得到2-{[(3aR,4S,6R,6aS)-6-[5-(benzylsulfanyl)-7-chloro-3H-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl]-2,2-dimethyl-hexahydrocyclopenta[d][1,3]dioxol-4-yl]oxy}ethan-1-ol