乙酸酐 、
4-Methyl-3-pentenyl O-(4,6-O-benzylidene-β-D-galactopyranosyl)-(1->4)-6-O-benzoyl-β-D-glucopyranoside 在
吡啶 作用下,
以93%的产率得到4-Methyl-3-pentenyl O-(2,3-di-O-acetyl-4,6-O-benzylidene-β-D-galactopyranosyl)-(1->4)-2,3-di-O-acetyl-6-O-benzoyl-β-D-glucopyranoside