2,3,4,6-tetra-O-benzoylglucosyl bromide 、
ethyl O-(2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl)-(1<*>3)-O-(2-O-benzoyl-β-D-glucopyranosyl)-(1<*>3)-4,6-di-O-acetyl-2-O-benzoyl-1-thio-α-D-glucopyranoside 在
2,6-二叔丁基-4-甲基吡啶 、 4 A molecular sieve 、
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 、
甲苯 为溶剂,
反应 1.0h,
以72%的产率得到ethyl O-(2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl)-(1<*>3)-O-<2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1<*>6)>-O-(2-O-benzoyl-β-D-glucopyranosyl)-(1<*>3)-4,6-di-O-acetyl-2-O-benzoyl-1-thio-α-D-glucopyranoside