methyl (phenyl 2-azido-3-O-benzyl-2-deoxy-1-thio-β-D-mannopyranosyl uronate) 、
2,3,4-tri-O-benzyl-6-O-(9-fluorenylmethoxycarbonyl)-1-O-(N-[phenyl]trifluoroacetimidoyl)-α-D-glucopyranoside 在
三氟甲磺酸 作用下,
以
乙醚 为溶剂,
反应 1.5h,
以90%的产率得到phenyl 4-O-[2,3,4-tri-O-benzyl-6-O-[9-fluorenylmethoxycarbonyl]-α-D-glucopyranosyl]-6-O-methyl-6-oxy-2-azido-3-O-benzyl-2-deoxy-1-thio-β-D-mannopyranoside