Diisopropyl-phosphoramidous acid (2R,3R,4R,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-5-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-4-[2-(2,2,2-trifluoro-acetylamino)-ethoxy]-tetrahydro-furan-3-yl ester 2-cyano-ethyl ester 、
1H-1,2,4-三唑 在
三氯氧磷 、
三乙胺 作用下,
以
乙腈 为溶剂,
反应 2.0h,
以45%的产率得到Diisopropyl-phosphoramidous acid (2R,3R,4R,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-5-(2-oxo-4-[1,2,4]triazol-1-yl-2H-pyrimidin-1-yl)-4-[2-(2,2,2-trifluoro-acetylamino)-ethoxy]-tetrahydro-furan-3-yl ester 2-cyano-ethyl ester