2-(2-{2-[2-(2-azido-ethoxy)-ethoxy]-ethoxy}-ethyl) β-D-galactopyranosyl-(1→4)-β-D-glucopyranoside 、
苯甲醛二甲缩醛 在
对甲苯磺酰胺 作用下,
反应 16.0h,
以88%的产率得到(4aR,6S,7R,8R,8aR)-6-(((2R,3S,4R,5R,6R)-6-(2-(2-(2-(2-azidoethoxy)ethoxy)ethoxy)ethoxy)-4,5-dihydroxy-2-(hydroxymethyl)tetrahydro-2H-pyran-3-yl)oxy)-2-phenylhexahydropyrano[3,2-d][1,3]dioxine-7,8-diol