O-(2,3,4-tri-O-benzyl-α-L-fucopyranosyl)-(1-> 3)-[O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1-> 4)]-6-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl trichloroacetimidate 、
在
三氟化硼乙醚 作用下,
以
1,2-二氯乙烷 为溶剂,
以12%的产率得到1,5-anhydro-6-O-benzyl-2-deoxy-2-phthalimido-4-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-3-O-(2,3,4-tri-O-benzyl-α-L-fucopyranosyl)-D-arabino-hex-1-enitol