Acetic acid (2R,3R,4S,5S,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-[2-((3S,4R,5R,6S)-3,4,5-tris-benzyloxy-6-methyl-tetrahydro-pyran-2-yloxy)-ethoxy]-tetrahydro-pyran-3-yl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以82%的产率得到(2R,3R,4R,5S,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-2-[2-((2S,3S,4R,5R,6S)-3,4,5-tris-benzyloxy-6-methyl-tetrahydro-pyran-2-yloxy)-ethoxy]-tetrahydro-pyran-3-ol