2-氰乙基N,N-二异丙基氯亚磷酰胺 、
Carbonic acid (2R,3R,4R,5R)-5-(4-benzoylamino-2-oxo-2H-pyrimidin-1-yl)-3-hydroxy-4-(1-isopropoxy-ethoxy)-tetrahydro-furan-2-ylmethyl ester 9H-fluoren-9-ylmethyl ester 在
N,N-二异丙基乙胺 作用下,
以
四氢呋喃 为溶剂,
以80%的产率得到Carbonic acid (2R,3R,4R,5R)-5-(4-benzoylamino-2-oxo-2H-pyrimidin-1-yl)-3-[(2-cyano-ethoxy)-diisopropylamino-phosphanyloxy]-4-(1-isopropoxy-ethoxy)-tetrahydro-furan-2-ylmethyl ester 9H-fluoren-9-ylmethyl ester