(2S,3R,4S,5S,6R)-2-(((2R,3R,4S,5R,6R)-6-(1H-benzo[d][1,2,3]triazole-1-carbothioamido)-4,5-bis(benzoyloxy)-2-((benzoyloxy)methyl)tetrahydro-2H-pyran-3-yl)oxy)-6-((benzoyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tribenzoate 、
(S)-methyl 3-amino-2-(((benzyloxy)carbonyl)amino)propanoate 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
以76%的产率得到(2R,3S,4S,5R,6S)-2-((benzoyloxy)methyl)-6-(((2R,3R,4S,5R,6R)-4,5-bis(benzoyloxy)-2-((benzoyloxy)methyl)-6-(3-((S)-2-(((benzyloxy)carbonyl)amino)-3-methoxy-3-oxopropyl)thioureido)tetrahydro-2H-pyran-3-yl)oxy)tetrahydro-2H-pyran-3,4,5-triyl tribenzoate