(1S,3R,4R,5R)-4-hydroxy-3-hydroxymethyl-1-phenyl-2,6-dioxabicyclo[3.3.0]octane 在
吡啶 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
生成 (1S,3R,4R,5R)-3-dimethoxytrityloxymethyl-4-O-(N,N-diisopropyl-β-cyanoethylphosphoramidyl)-1-phenyl-2,6-dioxabicyclo[3.3.0]octane