乙酸酐 、 (8-Methoxycarbonyloctyl)-<4,6-di-O-acetyl-2-azido-2-desoxy-3-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-α-D-galactopyranosid> 在
吡啶 、 sodium tetrahydroborate 、 nickel dichloride 作用下,
生成
(8-Methoxycarbonyloctyl)-<2-acetamido-4,6-di-O-acetyl-2-desoxy-3-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-α-D-galactopyranosid>