7-O-acetyl-6-O-allyl-2-O-benzoyl-4-O-benzyl-3-O-chloroacetyl-L-glycero-α-D-manno-heptopyranosyl-(1->3)-[2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1->4)]-1,6,7-tri-O-acetyl-2-O-benzyl-L-glycero-α-D-manno-heptopyranoside 、
乙硫醇 在
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
以69%的产率得到ethyl 7-O-acetyl-6-O-allyl-2-O-benzoyl-4-O-benzyl-3-O-chloroacetyl-L-glycero-α-D-manno-heptopyranosyl-(1->3)-[2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1->4)]-6,7-tri-O-acetyl-2-O-benzyl-1-thio-L-glycero-α-D-manno-heptopyranoside