3,6-di-O-benzyl-4-O-levulinate-β-D-mannopyranose-1,2-methyl orthoacetate 在
溶剂黄146 作用下,
以
水 为溶剂,
反应 2.0h,
生成 4-Oxo-pentanoic acid (2R,3R,4S,5S,6R)-5-acetoxy-4-benzyloxy-2-benzyloxymethyl-6-hydroxy-tetrahydro-pyran-3-yl ester 、 4-Oxo-pentanoic acid (2R,3R,4S,5S,6S)-5-acetoxy-4-benzyloxy-2-benzyloxymethyl-6-hydroxy-tetrahydro-pyran-3-yl ester