(3aR,5S,6R,7S,7aR)-6-hydroxy-2,2-dimethyl-7-phenylmethoxy-5,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-b]pyran-5-carbonitrile 、
[(2R,3S,4R,5R,6S)-5-azido-3-[(4-methoxyphenyl)methoxy]-4-phenylmethoxy-6-phenylsulfanyloxan-2-yl]methyl acetate 在
N-碘代丁二酰亚胺 、
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 为溶剂,
反应 0.42h,
以74%的产率得到[(2R,3S,4R,5R,6R)-6-[[(3aR,5S,6R,7S,7aR)-5-cyano-2,2-dimethyl-7-phenylmethoxy-5,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-b]pyran-6-yl]oxy]-5-azido-3-[(4-methoxyphenyl)methoxy]-4-phenylmethoxyoxan-2-yl]methyl acetate