1-O-(5-O-(5-O-acetyl-2,3-di-O-benzoyl-α-D-arabinofuranosyl)-2,3-di-O-benzoyl-α-D-arabinofuranosyl) trichloroacetimidate 、
p-tolyl-2,3-di-O-benzoyl-α-D-arabinofuranosyl-(1->5)-[2,3-di-O-benzoyl-α-D-arabinofuranosyl-(1->2)]-3-O-benzoyl-1-thio-α-D-arabinofuranoside 在
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以88%的产率得到p-tolyl-5-O-acetyl-2,3-di-O-benzoyl-α-D-arabinofuranosyl-(1->5)-2,3-di-O-benzoyl-α-D-arabinofuranosyl-(1->5)-2,3-di-O-benzoyl-α-D-arabinofuranosyl-(1->5)-[5-O-acetyl-2,3-di-O-benzoyl-α-D-arabinofuranosyl-(1->5)-2,3-di-O-benzoyl-α-D-arabinofuranosyl-(1->5)-2,3-di-O-benzoyl-α-D-arabinofuranosyl-(1->2)]-3-O-benzoyl-1-thio-α-D-arabinofuranoside