(2R,3R,4S,5R,6S)-2-(acetoxymethyl)-6-{[(2R,3R,4S,5R,6S)-4,5-diacetoxy-2-(acetoxymethyl)-6-[(4-methyl-2-oxo-2H-chromen-7-yl)thio]tetrahydro-2H-pyran-3-yl]oxy}tetrahydro-2H-pyran-3,4,5-triyl triacetate 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 8.0h,
以75%的产率得到7-(((2S,3R,4R,5S,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)thio)-4-methyl-2H-chromen-2-one