7-(2-deoxy-β-D-erythro-pentofuranosyl)-3,7-dihydro-5-{3-[(2,2,2-trifluoroacetyl)amino]prop-1-yn-1-yl}-4H-pyrrolo[2,3-d]pyrimidin-4-one 、
4,4'-双甲氧基三苯甲基氯 在
吡啶 作用下,
反应 3.0h,
以86%的产率得到7-[2-deoxy-5-O-(4,4'-dimethoxytrityl)-β-D-erythro-pentofuranosyl]-3,7-dihydro-5-{3-[(2,2,2-trifluoroacetyl)amino]prop-1-yn-1-yl}-4H-pyrrolo[2,3-d]pyrimidin-4-one