5-[(2R,3R,4S,5R)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-2-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-4-hydroxy-tetrahydro-furan-3-ylcarbamoyl]-pentanoic acid cyanomethyl ester 、
双(二异丙基氨基)(2-氰基乙氧基)膦 在
四氮唑 、
二异丙胺 作用下,
以47%的产率得到5-[(2R,3R,4S,5R)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-[(2-cyano-ethoxy)-diisopropylamino-phosphanyloxy]-2-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-ylcarbamoyl]-pentanoic acid cyanomethyl ester