乙酸酐 、
Acetic acid (2R,3S,4R,5R,6R)-3-acetoxy-2-acetoxymethyl-5-acetylamino-6-[(2R,3R,4S,5R,6S)-6-((1R,2S,3R,4R,5R)-3,4-dihydroxy-6,8-dioxa-bicyclo[3.2.1]oct-2-yloxy)-3,4,5-trihydroxy-tetrahydro-pyran-2-ylmethoxy]-tetrahydro-pyran-4-yl ester 在
吡啶 作用下,
以79.4%的产率得到O-2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-β-D-glucopyranosyl-(1-6)-O-2,3,4-tri-O-acetyl-β-D-galactopyranosyl-(1-4)-1,6-anhydro-2,3-di-O-acetyl-β-D-glucopyranose