(1S,2S,3S,4R,5S)-5-[4-chloro-3-[(4-hydroxyphenyl)methyl]phenyl]-1-(1-hydroxy-1-methylethyl)-6,8-dioxabicyclo[3.2.1]octane-2,3,4-triol 、
2-(cyclobutyloxy)ethyl-4-methylbenzenesulfonate 在
caesium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 12.0h,
以65 mg的产率得到(1S,2S,3S,4R,5S)-5-[4-chloro-3-[[4-[2-(2-cyclobutoxy)ethoxy]phenyl]methyl]phenyl]-1-(1-hydroxy-1-methylethyl)-6,8-dioxabicyclo[3.2.1]octane-2,3,4-triol