O-<(2,3,4,6-Tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-3,6-di-O-acetyl-2-desoxy-2-phthalimido-β-D-glucopyranosyl>trichloracetimidat 、
allyl 3,6-di-O-benzyl-α-D-mannopyranoside 在
molecular sieve 、
三氟化硼乙醚 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 1.0h,
以73.3%的产率得到allyl O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-O-(3,6-di-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-(1->2)-O-<(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-O-(3,6-di-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-...