(3'S,5'R)-N6-9-(2'-deoxy-3',5'-ethano-5',6'-methano-D-ribofuranosyl)adenine 在
吡啶 、
N,N-二异丙基乙胺 作用下,
以
乙腈 为溶剂,
反应 9.75h,
生成 Diisopropyl-phosphoramidous acid (1aR,1bR,3R,4aS,5aS)-3-(6-benzoylamino-purin-9-yl)-1a-[bis-(4-methoxy-phenyl)-phenyl-methoxy]-hexahydro-2-oxa-cyclopropa[a]pentalen-4a-yl ester 2-cyano-ethyl ester