7-(2-Desoxy-5-O-(4,4'-dimethoxytriphenylmethyl)-3-O-(phenoxythiocarbonyl)-β-D-erythro-pentofuranosyl)-2-<(4,4'-dimethoxytriphenylmethyl)amino>-3,7-dihydro-4H-pyrrolo<2,3-d>pyrimidin-4-on 在
偶氮二异丁腈 、
三正丁基氢锡 作用下,
以
甲苯 为溶剂,
反应 3.0h,
以75%的产率得到7-(2,3-Didesoxy-5-O-(4,4'-dimethoxytriphenylmethyl)-β-D-glycero-pentofuranosyl)-2-<(4,4'-dimethoxytriphenylmethyl)amino>-3,7-dihydro-4H-pyrrolo<2,3-d>pyrimidin-4-on