Methanesulfonic acid (R)-1-{(4S,5R)-5-[(1S,2R)-2-azido-1-(tert-butyl-dimethyl-silanyloxy)-2-diethylcarbamoyl-ethyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-2-hydroxy-ethyl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
生成 (R)-2-Azido-2-[(3aS,4S,6S,6aR)-6-(tert-butyl-dimethyl-silanyloxymethyl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl]-N,N-diethyl-acetamide