(SP)-5'-O-dimethoxytrityl-N4-benzoylcytidine 3'-O-(Se-methyl methanephosphonoselenolate) 、
[(2R,3S,5R)-2-[[[(2R,3S,5R)-2-[[[(2R,3S,5R)-5-(4-benzamido-2-oxopyrimidin-1-yl)-2-(hydroxymethyl)oxolan-3-yl]oxy-methylphosphoryl]oxymethyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]oxy-methylphosphoryl]oxymethyl]-5-[2-(2-methylpropanoylamino)-6-oxo-1H-purin-9-yl]oxolan-3-yl] acetate 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 、
lithium chloride 作用下,
以
吡啶 为溶剂,
生成 [(2R,3S,5R)-2-[[[(2R,3S,5R)-2-[[[(2R,3S,5R)-5-(4-benzamido-2-oxopyrimidin-1-yl)-2-[[[(2R,3S,5R)-5-(4-benzamido-2-oxopyrimidin-1-yl)-2-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]oxolan-3-yl]oxy-methylphosphoryl]oxymethyl]oxolan-3-yl]oxy-methylphosphoryl]oxymethyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]oxy-methylphosphoryl]oxymethyl]-5-[2-(2-methylpropanoylamino)-6-oxo-1H-purin-9-yl]oxolan-3-yl] acetate