Acetone → (2S,3S,4R,5R)-5-(6-[(2,2-Diphenylethyl)amino]-2-{[({[2-(1-piperidinyl)ethyl]amino}carbonyl)amino]methyl}-9H-purin-9-yl)-N-ethyl-3,4-dihydroxytetrahydro-2-furancarboxamide

Participants

Reaction Steps

Potassium carbonate (20 mg, 0.14 mmol) was added to a solution of (2S,3S,4R,5R)-4-(benzoyloxy)-5-(6-[(2,2-diphenylethyl)amino]-2-{[({[2-(1-piperidinyl)ethyl]amino}carbonyl)amino]methyl}-9H-purin-9-yl)-2-[(ethylamino)carbonyl]tetrahydro-3-furanyl benzoate (100 mg, 0.13 mmol) (Preparation 14) in methanol (100 ml). The reaction mixture was stirred at room temperature for 2 hours. More potassium carbonate (20 mg, 0.14 mmol) was then added and the reaction mixture was heated to 60° C. for 2 hours. The solvent was removed under reduced pressure to give a residue that was slurried with acetone and filtered. The filtrate was evaporated under reduced pressure and the residue was partially purified by column chromatography on silica gel eluting with dichloromethane:methanol:0.88 concentrated aqueous ammonia (90:10:1 by volume). The residue after solvent evaporation under reduced pressure was repurified by more column chromatography on silica gel eluting with dichloromethane:methanol:0.88 concentrated aqueous ammonia (90:10:1 by volume). The solvent was removed by evaporation under reduced pressure to give the title compound as a foam (17 mg).

Provenance & Evidence