Trifluoroacetic acid → HCID 117735886, compound

Participants

Reaction Steps

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 6-((R)-2-((((4-azidobenzyl)oxy)carbonyl)amino)-3-(tert-butyldisulfanyl)propanamido)-2-((tert-butoxycarbonyl)amino)hexanoate (Compound tk25) (6.7 mg, 5.44 μmol) in dichloromethane (0.4 mL) was cooled in an ice bath, after which trifluoroacetic acid (0.1 mL) was added and the mixture was stirred at room temperature for 25 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-6-((R)-2-((((4-azidobenzyl)oxy) carbonyl)amino)-3-(tert-butyldisulfanyl)propanamido)hexanoate (Lys(Acbz-Cys(StBu))-pdCpA) (Compound tk26) (1.7 mg, 28%).

Provenance & Evidence