Acetic acid (2S,3R,4R,5R,6R)-5-azido-6-bromo-2-(2-oxo-propoxy)-4-((2R,3R,4S,5S,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-3-yl ester 在
sodium tetrahydroborate 、
silver trifluoromethanesulfonate 、 nickel dichloride 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
生成
O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->3)-O-(2-acetamido-4,6-di-O-acetyl-2-deoxy-α-D-galactopyranosyl)-(1->3)-N-(benzyloxycarbonyl)-L-serine tert-butyl ester