3,4,6-tri-O-benzyl-β-D-mannopyranose 1,2-(pent-4-enyl orthobenzoate) 、
1,2-O-cyclohexylidene-3,4,5-tri-O-benzyl-6-O-(2-azido-3,6-di-O-benzyl-2-deoxy-4-α-D-glucopyranosyl)-D-myo-inositol 在
N-碘代丁二酰亚胺 、
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
以91%的产率得到[(2R,3S,4S,5R,6R)-2-[(2R,3S,4R,5R,6R)-6-[(3aS,4R,5S,6S,7R,7aR)-5,6,7-tris(phenylmethoxy)spiro[3a,4,5,6,7,7a-hexahydro-1,3-benzodioxole-2,1'-cyclohexane]-4-yl]oxy-5-azido-4-phenylmethoxy-2-(phenylmethoxymethyl)oxan-3-yl]oxy-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-3-yl] benzoate