乙酸酐 、
4,6-diacetamino-4,6-dideoxy-α-D-galactopyranosyl α-D-glucopyranoside 在
吡啶 作用下,
以50%的产率得到Acetic acid (2R,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-[(2R,3R,4S,5S,6R)-3,4-diacetoxy-5-acetylamino-6-(acetylamino-methyl)-tetrahydro-pyran-2-yloxy]-tetrahydro-pyran-3-yl ester