(2R,3S,4S,5R,6R)-2-(acetoxymethyl)-4-(carbamoyloxy)-6-((2R,3S,4S,5S,6S)-4,5-diacetoxy-6-(acetoxymethyl)-2-(2-(2-(5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)ethoxy)ethoxy)tetrahydro-2H-pyran-3-yloxy)tetrahydro-2H-pyran-3,5-diyl diacetate 在
甲醇 、
potassium carbonate 作用下,
反应 3.0h,
以65%的产率得到(2R,3S,4S,5R,6R)-2-((2R,3S,4S,5S,6S)-4,5-dihydroxy-6-(hydroxymethyl)-2-(2-(2-(5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)ethoxy)ethoxy)tetrahydro-2H-pyran-3-yloxy)-3,5-dihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-4-yl carbamate