双(二异丙基氨基)(2-氰基乙氧基)膦 、
5'-(dimethoxytrityl)-5,2'-O-dimethyl-3-(β-D-ribofuranosyl)-1,2,4-triazolo<2,3-a>purine-9-thione 在
二异丙基铵盐四氮唑 作用下,
以
乙腈 为溶剂,
反应 18.0h,
以78%的产率得到Diisopropyl-phosphoramidous acid (2R,3R,4R,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-methoxy-5-(5-methyl-9-thioxo-5,9-dihydro-[1,2,4]triazolo[1,5-a]purin-3-yl)-tetrahydro-furan-3-yl ester 2-cyano-ethyl ester