3-(trifluoroacetamido)propyl 3,4,6-tri-O-benzyl-α-D-mannopyranosyl-(1->2)-3,4,6-tri-O-benzyl-α-D-mannopyranoside 、
ethyl 2,4-di-O-benzoyl-3-O-[tert-butyl(dimethyl)silyl]-6-O-chloroacetyl-1-thio-α-D-mannopyranoside 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 作用下,
以
二氯甲烷 为溶剂,
反应 0.92h,
以96%的产率得到3-trifluoroacetamidopropyl (2,4-di-O-benzoyl-3-O-[tert-butyl(dimethyl)silyl]-6-O-chloroacetyl-α-D-mannopyranosyl)-(1->2)-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->2)-3,4,6-tri-O-benzyl-α-D-mannopyranoside