2,4-di-O-benzoyl-3-O-benzyl-α-L-rhamnopyranosyl chloride 、
2-(trimethylsilyl)ethyl O-(3,4,6-tri-O-acetyl-α-D-galactopyranosyl)-(1->3)-O-(2-acetamido-4,6-di-O-acetyl-2-deoxy-α-D-glucopyranosyl)-(1->3)-2,4-di-O-benzoyl-α-L-rhamnopyranoside 在
2,6-二叔丁基-4-甲基吡啶 、 4 A molecular sieve 、
silver trifluoromethanesulfonate 作用下,
生成 2-(trimethylsilyl)ethyl O-(2,4-di-O-benzoyl-3-O-benzyl-α-L-rhamnopyranosyl)-(1->2)-O-(3,4,6-tri-O-acetyl-α-D-galactopyranosyl)-(1->3)-O-(2-acetamido-4,6-di-O-acetyl-2-deoxy-α-D-glucopyranosyl)-(1->3)-2,4-di-O-benzoyl-α-L-rhamnopyranoside