O-(3,4-di-O-benzoyl-α-L-rhamnopyranosyl)-(1->2)-O-(3,4-di-O-benzoyl-α-L-rhamnopyranosyl)-(1->3)-4-O-benzoyl-1,2-O-<1-(exocyano)ethylidene>-β-L-rhamnopyranose 、
3-O-acetyl-4,6-di-O-benzoyl-2-desoxy-2-phthalimido-D-glucopyranosyl bromide 在
氰化汞 、 mercury dibromide 作用下,
以
乙腈 为溶剂,
以48%的产率得到O-(3-O-acetyl-4,6-di-O-benzoyl-2-deoxy-2-phtalimido-β-D-glucopyranosyl)-(1<*>2)-O-(3,4-di-O-benzoyl-α-L-rhamnopyranosyl)-(1<*>2)-O-(3,4-di-O-benzoyl-α-L-rhamnopyranosyl)-(1<*>3)-4-O-benzoyl-1,2-O-<1-(exo-cyano)ethylidene>-β-L-rhamnopyranose