1-((2R,4S,5R)-5-{[bis(4-methoxyphenyl)(phenyl)methoxy]methyl}-4-hydroxy-tetrahydrofuran-2-yl)-3-[(α-methyl-3-nitro-2-dibenzofuranylmethoxy)methyl]-5-methylpyrimidine-2,4(1H,3H)-dione 、
2-氰乙基N,N-二异丙基氯亚磷酰胺 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以80%的产率得到(2R,3S,5R)-2-{[bis(4-methoxyphenyl)(phenyl)methoxy]methyl}-5-{3-[(α-methyl-3-nitro-2-dibenzofuranylmethoxy)methyl]-5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl}-tetrahydrofuran-3-yl 2-cyanoethyl diisopropylphosphoramidite