methyl 2-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-3,4-O-isopropylidene-6-O-levulinoyl-α-D-galactopyranoside 在
乙酰丙酮 作用下,
以
吡啶 、
溶剂黄146 为溶剂,
以90%的产率得到methyl 2-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-3,4-O-isopropylidene-α-D-galactopyranoside