4-methoxyphenyl O-(4-O-allyloxycarbonyl-6-O-levulinoyl-2,3-di-O-p-toluoyl-β-D-glucopyranosyl)-(1-> 3)-3,4-di-O-acetoxy-2-deoxy-2-phthalimido-β-D-glucopyranoside 在
吗啉 、 tetrakis(triphenylphospholine)palladium 作用下,
以
四氢呋喃 为溶剂,
以95%的产率得到4-methoxyphenyl O-(6-O-levulinoyl-2,3-di-O-p-toluoyl-β-D-glucopyranosyl)-(1-> 3)-4,6-di-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranoside