O-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-(1->3)-O-<(2,3,4-tri-O-acetyl-β-D-xylopyranosyl)-(1->2)>-O-(4,6-di-O-acetyl-β-D-mannopyranosyl)-(1->4)-2,3,6-tri-O-acetyl-α-D-glucopyranosyl trichloroacetimidate 、
(2S,3R,4E)-2-azido-3-O-(tert-butyldiphenylsilyl)-4-octadecene-1,3-diol 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以60%的产率得到O-(2,3,4,6-tetra-O-acetyl-α-D-manp)-(1->3)-O-<(2,3,4-tri-O-acetyl-β-D-xylp)-(1->2)>-O-(4,6-di-O-acetyl-β-D-manp)-(1->4)-O-(2,3,6-tri-O-acetyl-β-D-glucopyranosyl)-(1->1)-(2S,3R,4E)-2-azido-3-O-(tert-butyldiphenylsilyl)-4-octadecene-1,3-diol