乙酸酐 、
N-Allyloxycarbonyl-O-<(β-galactopyranosyl)-(1<*>3)-O-(2-acetamido-2-desoxy-α-D-galactopyranosyl)>-L-threonyl-tert-butylester 在
吡啶 作用下,
反应 5.0h,
以98%的产率得到N-Allyloxycarbonyl-O-<(2,3,4,6-tetra-O-acetyl-β-galactopyranosyl)-(1<*>3)-O-(2-acetamido-4,6-di-O-acetyl-2-desoxy-α-D-galactopyranosyl)>-L-threonyl-tert-butylester