1-((1R,3R,4R,7S)-5-Benzoyl-7-hydroxy-1-hydroxymethyl-2-oxa-5-aza-bicyclo[2.2.1]hept-3-yl)-5-methyl-1H-pyrimidine-2,4-dione 在
吡啶 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
生成 Diisopropyl-phosphoramidous acid (1R,3R,4R,7S)-5-benzoyl-1-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-3-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-2-oxa-5-aza-bicyclo[2.2.1]hept-7-yl ester 2-cyano-ethyl ester