6-(benzyloxy)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxole-4-carbaldehyde oxime 、
2,6-anhydro-3,4,5,7-tetra-O-benzyl-1-deoxy-D-gluco-hept-1-enitol 在
N-氯代丁二酰亚胺 、
三乙胺 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 24.33h,
以50%的产率得到(5R,7R,8R,9S,10R)-8,9,10-tris(benzyloxy)-3-[(3aS,4'S,6'R,6aS)-6'-(benzyloxy)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4'-yl]-7-[(benzyloxy)methyl]-1,6-dioxa-2-azaspiro[4.5]dec-2-ene