在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 2.5h,
以83%的产率得到methyl (2R,4S,5R,6R)-5-azido-4-hydroxy-2-[(2R,4S,5R,6R)-2-methoxycarbonyl-2-[[(2R,3R,4S,5R,6R)-5-[(4-methoxyphenyl)methoxy]-3,4-bis(phenylmethoxy)-6-(2-trimethylsilylethoxy)oxan-2-yl]methoxy]-5-[(2-methylpropan-2-yl)oxycarbonylamino]-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxan-4-yl]oxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylate