(R)-4-[3-((2R,3S,4R,5S,6R)-3-Acetylamino-4,5-bis-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-yl)-1-hydroxy-prop-2-ynyl]-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester 在
sodium acetate 、
对甲苯磺酰肼 作用下,
以
乙二醇二甲醚 为溶剂,
反应 5.5h,
以97%的产率得到(R)-4-[3-((2R,3S,4R,5S,6R)-3-Acetylamino-4,5-bis-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-yl)-1-hydroxy-propyl]-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester