8-methoxycarbonyloctyl 6-O-<2-O-(3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-3,4,6-tri-O-benzyl-α-D-mannopyranosyl>-2,4-di-O-benzyl-β-D-mannopyranoside 、
2,3,4,6-四-O-乙酰基-1-溴-Alpha-D-甘露糖 在
4 A molecular sieve 、
氰化汞 、 mercury dibromide 作用下,
以
乙腈 为溶剂,
以65%的产率得到8-methoxycarbonyloctyl 6-O-<2-O-(3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-Dglucopyranosyl)-3,4,6-tri-O-benzyl-α-D-mannopyranosyl>-3-O-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-2,4-di-O-benzyl-β-D-manoopyranoside