2-氰乙基N,N-二异丙基氯亚磷酰胺 、
4-[[(2R,3S,5R)-5-(4-Benzoylamino-2-oxo-2H-pyrimidin-1-yl)-3-hydroxy-tetrahydro-furan-2-ylmethoxy]-bis-(4-methoxy-phenyl)-methyl]-benzoic acid 2,5-dioxo-pyrrolidin-1-yl ester 在
N,N-二异丙基乙胺 作用下,
以66%的产率得到4-[{(2R,3S,5R)-5-(4-Benzoylamino-2-oxo-2H-pyrimidin-1-yl)-3-[(2-cyano-ethoxy)-diisopropylamino-phosphanyloxy]-tetrahydro-furan-2-ylmethoxy}-bis-(4-methoxy-phenyl)-methyl]-benzoic acid 2,5-dioxo-pyrrolidin-1-yl ester