2-O-benzyl-(3,4,6-tri-O-benzyl-2-O-triethylsilyl-β-D-glucopyranosyl-(1-3))-(((5-O-benzyl-2,3-di-O-benzylidene-β-D-apiofuranosyl-(1-3))-2,4-di-O-benzyl-β-D-xylopyranosyl-(1-4)))-L-rhamnopyranose 、
三氯乙腈 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
以92%的产率得到O-trichloroacetimidoyl 2-O-benzyl-(3,4,6-tri-O-benzyl-2-O-triethylsilyl-β-D-glucopyranosyl-(1-3))-(((5-O-benzyl-2,3-di-O-benzylidene-β-D-apiofuranosyl-(1-3))-2,4-di-O-benzyl-β-D-xylopyranosyl-(1-4)))-L-rhamnopyranose