(2R,3R)-1-bis(4-methoxyphenyl)(phenyl)methoxy-3-((3,4-dihydro-5-methyl-2,4-dioxopyrimidin-1(2H)-yl)methyl)butan-3-ol 、
双(二异丙基氨基)(2-氰基乙氧基)膦 在
二异丙基铵盐四氮唑 作用下,
以
二氯甲烷 为溶剂,
以86%的产率得到(2R,3R)-1-bis(4-methoxyphenyl)(phenyl)methoxy-2-((3,4-dihydro-5-methyl-2,4-dioxopyrimidin-1(2H)-yl)methyl)butan-3-yl 2-cyanoethyl N,N-diisopropylphosphoramidite