(2R,3S,4R,5R)-2-((((((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-2-((phosphonooxy)methyl)tetrahydrofuran-3-yl)oxy)(hydroxy)phosphoryl)oxy)methyl)-5-(6-amino-9H-purin-9-yl)-4-hydroxytetrahydrofuran-3-yl 2-((tert-butoxycarbonyl) (2-(tert-butyldisulfanyl)ethyl)amino)acetate → (2R,3S,4R,5R)-2-((((((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-2-((phosphonooxy)methyl)tetrahydrofuran-3-yl)oxy)(hydroxy)phosphoryl)oxy)methyl)-5-(6-amino-9H-purin-9-yl)-4-hydroxytetrahydrofuran-3-yl 2-((2-(tert-butyldisulfanyl)ethyl)amino)acetate

Participants

Reaction Steps

(2R,3S,4R,5R)-2-((((((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-2-((phosphonooxy)methyl)tetrahydrofuran-3-yl)oxy)(hydroxy)phosphoryl)oxy)methyl)-5-(6-amino-9H-purin-9-yl)-4-hydroxytetrahydrofuran-3-yl 2-((tert-butoxycarbonyl)(2-(tert-butyldisulfanyl)ethyl)amino)acetate (Compound 6h-A, 56.2 mg, 0.060 mmol) was dissolved in TFA (1.0 ml), and the mixture was stirred at room temperature for 5 minutes. The reaction solution was concentrated under reduced pressure, and the residue was then purified by Column chromatography (0.05% aqueous TFA solution:0.05% TFA-acetonitrile solution=85:15=85:15) to afford the title compound (40.6 mg, 81%).

Provenance & Evidence