三氯乙腈 、
(2S,3S,4S,5R,6S)-3-((2R,3R,4R,5S,6R)-4,5-Diacetoxy-6-acetoxymethyl-3-azido-tetrahydro-pyran-2-yloxy)-6-hydroxy-4,5-bis-(4-methyl-benzoyloxy)-tetrahydro-pyran-2-carboxylic acid methyl ester 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
二氯甲烷 为溶剂,
以84%的产率得到(2S,3S,4S,5R,6R)-3-((2R,3R,4R,5S,6R)-4,5-Diacetoxy-6-acetoxymethyl-3-azido-tetrahydro-pyran-2-yloxy)-4,5-bis-(4-methyl-benzoyloxy)-6-(2,2,2-trichloro-acetimidoyloxy)-tetrahydro-pyran-2-carboxylic acid methyl ester