allyl O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1<*>3)-2-acetamido-4-O-acetyl-2-deoxy-α-D-galactopyranoside 在
pyridine-SO3 complex 、
sodium methylate 作用下,
以
甲醇 、
N,N-二甲基甲酰胺 为溶剂,
反应 17.0h,
生成 Sulfuric acid mono-[(2R,3R,4R,5R,6S)-5-acetylamino-6-allyloxy-3-hydroxy-4-((2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-2-ylmethyl] ester