methyl (2-O-benzoyl-3-O-benzyl-6-O-chloroacetyl-β-D-glucopyranosyl)-(1->4)-(2-acetamido-3,6-di-O-benzyl-2-deoxy-α-D-glucopyranoside) 、 phenyl [tert-butyl (3,4-di-O-benzyl-2-O-benzoyl-β-D-glucopyranosyl)uronate]-(1->4)-(2-azido-3,6-di-O-benzyl-2-deoxy-1-thio-β-D-glucopyranoside) 在
2,6-二叔丁基-4-甲基吡啶 、
DMTST 作用下,
以
乙醚 、
二氯甲烷 为溶剂,
以40%的产率得到methyl [tert-butyl (2-O-benzoyl-3,4-di-O-benzyl-β-D-glucopyranosyl)uronate]-(1->4)-(2-azido-3,6-di-O-benzyl-2-deoxy-α-D-glucopyranosyl)-(1->4)-(2-O-benzoyl-3-O-benzyl-6-O-chloroacetyl-β-D-glucopyranosyl)-(1->4)-(2-acetamido-3,6-di-O-benzyl-2-deoxy-α-D-glucopyranoside)