2-氰乙基N,N-二异丙基氯亚磷酰胺 、
Carbonic acid 9H-fluoren-9-ylmethyl ester (2R,3R,4R,5R)-3-hydroxy-5-(2-isobutyrylamino-6-oxo-1,6-dihydro-purin-9-yl)-4-(1-isopropoxy-ethoxy)-tetrahydro-furan-2-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)-3-[(2-cyano-ethoxy)-diisopropylamino-phosphanyloxy]-5-(2-isobutyrylamino-6-oxo-1,6-dihydro-purin-9-yl)-4-(1-isopropoxy-ethoxy)-tetrahydro-furan-2-ylmethyl ester 9H-fluoren-9-ylmethyl ester