甲醇 、
5'-O-tritylthymidine 、
在
2,4,6-triisopropylbenzenesulfonyl tetrazolide 作用下,
以62%的产率得到Acetic acid (2R,3S,5R)-5-(4-hydroxy-5-methyl-2-oxo-2H-pyrimidin-1-yl)-2-{[(2R,3S,5R)-5-(4-hydroxy-5-methyl-2-oxo-2H-pyrimidin-1-yl)-2-trityloxymethyl-tetrahydro-furan-3-yloxy]-methoxy-phosphoryloxymethyl}-tetrahydro-furan-3-yl ester