Trifluoroacetic acid → HCID 117735365, compound

Participants

Reaction Steps

Trifluoroacetic acid (0.117 mL) was added to a solution of (2S)-(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 5-(((benzyloxy)carbonyl)amino)-2-((tert-butoxycarbonyl)amino)pentanoate (Compound tk67) (30 mg, 0.030 mmol) in dichloromethane (1.1 mL), and the mixture was stirred at room temperature for 35 minutes. Following concentration under reduced pressure, the resulting residue was purified by reverse-phase silica gel column chromatography (0.05% aqueous trifluoroacetic acid solution/0.05% trifluoroacetic acid-acetonitrile solution) to afford (2S)-(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-amino-5-(((benzyloxy)carbonyl)amino)pentanoate (Orn(Z)-pdCpA) (Compound tk68) (24.4 mg, 91%).

Provenance & Evidence