(2R,3S,4S,5R,6R)-5-Acetoxy-3,4-bis-benzyloxy-6-((3R,4R,5R,6R)-2,5-diacetoxy-3-azido-6-benzyloxymethyl-tetrahydro-pyran-4-yloxy)-tetrahydro-pyran-2-carboxylic acid methyl ester 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 、
苄胺 作用下,
以
乙醚 、
二氯甲烷 为溶剂,
反应 1.0h,
生成 (2R,3S,4S,5R,6R)-5-Acetoxy-6-[(2R,3R,4R,5R)-3-acetoxy-5-azido-2-benzyloxymethyl-6-(2,2,2-trichloro-acetimidoyloxy)-tetrahydro-pyran-4-yloxy]-3,4-bis-benzyloxy-tetrahydro-pyran-2-carboxylic acid methyl ester