<1S,3R,5S,5(4R),6R,8S,10S>-10-Acetylamino-5-(2,2-dimethyl-1,3-dioxolan-4-yl)-8-methoxy-3-(2-propenyloxy)-2,4,7-trioxatricyclo<4.3.1.03,8>decan 在
Amberlyst 15 作用下,
以
甲醇 为溶剂,
反应 1.5h,
以7%的产率得到(2S,4S,5R,6R)-5-Acetylamino-4-hydroxy-2-methoxy-6-((1R,2R)-1,2,3-trihydroxy-propyl)-tetrahydro-pyran-2-carboxylic acid allyl ester