Acetic acid (2R,3S,4S,5R,6S)-3-acetoxy-5-benzyloxy-6-[(2R,3S,4R,5R,6S)-4-benzyloxy-2-benzyloxymethyl-6-ethylsulfanyl-5-(2-trimethylsilanyl-ethanesulfonylamino)-tetrahydro-pyran-3-yloxy]-2-benzyloxymethyl-tetrahydro-pyran-4-yl ester 在
cesium fluoride 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以77%的产率得到Acetic acid (2R,3S,4S,5R,6S)-3-acetoxy-6-((2R,3S,4R,5R,6S)-5-amino-4-benzyloxy-2-benzyloxymethyl-6-ethylsulfanyl-tetrahydro-pyran-3-yloxy)-5-benzyloxy-2-benzyloxymethyl-tetrahydro-pyran-4-yl ester