6-O-<(3'R,4'R,5'R)-5'-hydroxy-3',4',6'-tribenzyloxyhex-1'(Z)-enyl>-1,2:3,4-di-O-isopropylidene-α-D-galactopyranose 在
N-碘代丁二酰亚胺 作用下,
以
various solvent(s) 为溶剂,
反应 3.0h,
以96%的产率得到(3aR,5aS,8aS,8bR)-5-((2S,3R,4S,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-3-iodo-tetrahydro-pyran-2-yloxymethyl)-2,2,7,7-tetramethyl-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran