2,3,6,2',3',4',6'-hepta-O-acetyl-isocyanato-β-D-lactose 、
正丁醇 反应 3.0h,
以87.43%的产率得到(2R,3S,4S,5R,6S)-2-(acetoxymethyl)-6-(((2R,3R,4S,5R,6R)-4,5-diacetoxy-2-(acetoxymethyl)-6-((butoxycarbonyl)amino)tetrahydro-2H-pyran-3-yl)oxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate