(2R,3S,5R)-2-(azidomethyl)-5-(2-(2-methylpropanamido)-6-oxo-1H-purin-9(6H)-yl)tetrahydrofuran-3-yl 2,5-dioxopyrrolidin-1-yl carbonate 在
二乙酸二丁基锡 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 72.0h,
以99%的产率得到(2R,3S,5R)-2-(azidomethyl)-5-(2-(2-methylpropanamido)-6-oxo-1H-purin-9(6H)-yl)tetrahydrofuran-3-yl 1-((2R,3S,5R)-3-hydroxy-5-(2-(2-methylpropanamido)-6-oxo-1H-purin-9(6H)-yl)tetrahydrofuran-2-yl)methylcarbamate