(1R,2R,5R,7R,8S)-8-hydroxy-5-hydroxymethyl-2-methyl-7-(thymin-1-yl)-6-oxa-bicyclo[3.2.1]octane 在
N,N-二异丙基乙胺 作用下,
以
四氢呋喃 、
吡啶 为溶剂,
生成 (1R,2R,5R,7R,8S)-8-(2-cyanoethoxy-(diisopropylamino)-phosphinoxy)-5-(4,4'-dimethoxytrityloxymethyl)-2-methyl-7-(thymin-1-yl)-6-oxa-bicyclo[3.2.1]octane