(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 、
三甲氧基磷 以
N,N-二甲基甲酰胺 为溶剂,
反应 18.0h,
以32%的产率得到(2R,3S,5R)-2-((dimethoxyphosphorylamino)methyl)-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