tert-butyldimethylsilyl (methyl 2-O-acetyl-3-O-benzyl-4-O-levulinoyl-α-L-idopyranosiduronate)-(1->4)-2-azido-3,6-di-O-benzyl-2-deoxy-β-D-glucopyranoside 在
四丁基氟化铵 、
溶剂黄146 作用下,
以
四氢呋喃 为溶剂,
反应 4.0h,
以90%的产率得到(2R,3S,4S,5R,6R)-5-Acetoxy-6-((2R,3S,4R,5R,6R)-5-azido-4-benzyloxy-2-benzyloxymethyl-6-hydroxy-tetrahydro-pyran-3-yloxy)-4-benzyloxy-3-(4-oxo-pentanoyloxy)-tetrahydro-pyran-2-carboxylic acid methyl ester