反应详情

5-[3-(trifluoroacetamido)propynyl]cytidine (1.25 g, 3.19 mmol, 1.00 equiv.) was dissolved in methanol (30 mL). Palladium hydroxide (0.25 g, 20 wt./wt. % based on propynyl cytidine) and triethylsilane (3.71 g, 31.90 mmol, 10.00 equiv.) were added to the reaction mixture. After 20-24 hours at ambient temperature, the reaction mixture was filtered through glass fiber and the filtrate was concentrated under reduced pressure giving a dark brown residue. The residue was purified by flash chromatography. Removal of solvent from the appropriate fractions afforded 0.85 g (71%) of 5-[3-(trifluoroacetamido)propyl]cytidine as a cream colored solid, which was confirmed by 1H-NM.

1. filtrationthe reaction mixture was filtered through glass fiber
2. concentrationthe filtrate was concentrated under reduced pressure
3. customgiving a dark brown residue
4. customThe residue was purified by flash chromatography
5. customRemoval of solvent from the appropriate fractions