2-benzyloxycarbonylamino-3-hydroxy-propionic acid benzyl ester 、
Ethyl-O-(2,3,4,6-tetra-O-di-<α,α-D2>benzyl-β-D-galactopyranosyl)-(1->3)-2-azido-2-desoxy-4,6-di-O-di-<α,α-D2>benzyl-1-thio-β-D-galactopyranosid 在
三氟甲烷磺酸甲酯 作用下,
以
乙醚 为溶剂,
反应 36.0h,
以73%的产率得到N-(Benzyloxycarbonyl)-O-<(2,3,4,6-tetra-O-di-<α,α-D
2>benzyl-β-D-galactopyranosyl)>-(1->3)-(2-azido-2-desoxy-4,6-di-O-di-<α,α-D
2>benzyl-α-D-galactopyranosyl)>-L-serin-benzylester