Acetic Acid → HCID 69534156, compound

Participants

Reaction Steps

Sodium triacetoxyborohydride (162 mg, 0.76 mmol) was added to a stirred solution of (2R,3R,4S,5R)-2-{2-(aminomethyl)-6-[(2,2-diphenylethyl)amino}-9H-purin-9-yl}-5-(methoxymethyl)tetrahydro-3,4-furandiol (250 mg, 0.51 mmol) (example 1), 1-methyl-4-piperidinone (52 mg, 0.46 mmol) and acetic acid (30 mg, 0.5 mmol) in tetrahydrofuran (20 ml). The reaction mixture was stirred for 24 hr at room temperature. The solvent was then removed under reduced pressure and the residue partitioned between dichloromethane (30 ml) and saturated aqueous sodium hydrogen carbonate solution (10 ml). The aqueous layer was discarded and the organic layer washed with water (10 ml), separated and the solvent removed under reduced pressure to give a residue which was purified by column chromatography on silica gel eluting with a solvent gradient of dichloromethane:methanol:ammonia (90:10:0.5) increasing in polarity to (85:15:0.75) to give the title compound contaminated with example 1. The mixture was treated with diethyl ether (10 ml) and the solid filtered off. This solid was treated with diethyl ether (10 ml) and then filtered. The diethyl ether filtrates were combined and the solvent removed under reduced pressure to give the title compound (60 mg) as a solid. MS: 589 (MH+).

Provenance & Evidence