反应详情

温度

37 °C

2-Amino-6-methylaminopurine (J. A. Montgomery and L. B. Holum, J.A.C.S. 80:404, 1958; 0.51 g; 3.1 mmoles) and 1-(2-deoxy-2-fluoro-β-D-ribofuranosyl)uracil (0.52 g, 2.1 mmoles) which may be prepared according to J. F. Codington et al. (J. Org. Chem. 29:558, 1964) were suspended in 50 ml of 5 mM potassium phosphate buffer, pH 7.0, which contained 0.04% (w/v) potassium azide. Thymidine phosphorylase (4,000 I.U.) and purine nucleoside phosphorylase (14,000 I.U.) (T. A. Krenitsky et al., Biochemistry 20:3615, 1981 and U.S. Pat. No. 4,381,344) were added and the suspension stirred at 37° C. On day 6, the reaction was diluted to 250 ml with 5 mM potassium phosphate buffer, pH 7.0, which contained 0.04% (w/v) potassium azide and 0.49 g of 2-amino-6-methylaminopurine and 4,000 I.U. thymidine phosphorylase and 14,000 I.U. purine nucleoside phosphorylase were added. On day 14, the reaction was evaporated. The residue was suspended in methanol/water and the suspension filtered. The filtrate was evaporated. The residue was dissolved in water and applied to a 2.5×13 cm column of anion exchange resin (Bio-Rad AG1X2-hydroxide form). After washing the column with water, the product was eluted with methanol/water (1/1). After the solvent was removed under vacuum, the residue was dissolved in water and filtered through a 0.22 μm-pore membrane filter. Lyophilization of the filtrate yielded title compound that anlyzed as a 0.5 hydrate.

1. addition4,381,344) were added
2. waitOn day 6
3. waitOn day 14
4. customthe reaction was evaporated
5. filtrationthe suspension filtered
6. customThe filtrate was evaporated
7. dissolutionThe residue was dissolved in water
8. washAfter washing the column with water
9. washthe product was eluted with methanol/water (1/1)
10. customAfter the solvent was removed under vacuum
11. dissolutionthe residue was dissolved in water
12. filtrationfiltered through a 0.22 μm-pore membrane
13. filtrationfilter