(2R,3S,4S,5R,6S)-2-(acetoxymethyl)-6-(4-(2-(6-(tert-butoxy carbonylamino)hexylamino)-2-oxoethyl)-2-oxo-2H-chromen-7-yloxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate 在
甲醇 、
sodium methylate 作用下,
反应 1.5h,
以65%的产率得到tert-butyl 6-(2-(2-oxo-7-((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yloxy)-2H-chromen-4-yl)acetamido)hexylcarbamate