ethyl O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-(1<*>3)-O-<2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl-(1<*>6)>-2,4-di-O-acetyl-1-thio-α-D-glucopyranoside 在
4 A molecular sieve 、
四乙基溴化铵 、
溴 、
氰化汞 作用下,
以
甲苯 为溶剂,
反应 2.33h,
生成
allyl O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-(1<*>3)-O-<2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl-(1<*>6)>-2,4-di-O-acetyl-β-D-glucopyranoside