3,3'-O,N-dibenzoylthymidine 、
5'-O-methoxyacetyl-3'-O-methylthiomethylene-2'-deoxy-uridine 在
三氟甲磺酸 N-碘代丁二酰亚胺 作用下,
以
四氢呋喃 、
1,2-二氯乙烷 为溶剂,
以95%的产率得到Benzoic acid (2R,3S,5R)-5-(3-benzoyl-5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-2-[(2R,3S,5R)-5-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-2-(2-methoxy-acetoxymethyl)-tetrahydro-furan-3-yloxymethoxymethyl]-tetrahydro-furan-3-yl ester