乙酸酐 、
2-O-(3,4,6-Tri-O-acetyl-2-N-allyloxycarbonylamino-2-deoxy-β-D-glucopyranosyl)-1,6-anhydro-β-D-mannopyranose 在
吡啶 、
4-二甲氨基吡啶 作用下,
反应 8.0h,
生成 Acetic acid (1R,2R,3S,4S,5R)-2-acetoxy-4-((2S,3R,4R,5S,6R)-4,5-diacetoxy-6-acetoxymethyl-3-allyloxycarbonylamino-tetrahydro-pyran-2-yloxy)-6,8-dioxa-bicyclo[3.2.1]oct-3-yl ester