5'-O-(4-monomethoxytrityl)-2'-deoxythymidine 、
氯磷酸二甲酯 以
吡啶 、
苯 为溶剂,
以65%的产率得到Phosphoric acid (2S,3R,5S)-2-[(4-methoxy-phenyl)-diphenyl-methoxymethyl]-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester methyl ester; compound with pyridine