(3R,4S,5R,6R)-6-(acetoxymethyl)-5-(((2S,3R,4S,5R,6S)-3,4-diacetoxy-5-azido-6-((benzoyloxy)methyl)tetrahydro-2H-pyran-2-yl)oxy)-2-(2,2,2-trichloro-1-iminoethoxy)tetrahydro-2H-pyran-3,4-diyl diacetate 、
9H-芴-9-基甲基(5-羟基戊基)氨基甲酸酯 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以39%的产率得到(2S,3R,4S,5R,6S)-2-(((2R,3R,4S,5R,6R)-6-((5-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)pentyl)oxy)-4,5-diacetoxy-2-(acetoxymethyl)tetrahydro-2H-pyran-3-yl)oxy)-5-azido-6-((benzoyloxy)methyl)tetrahydro-2H-pyran-3,4-diyl diacetate