Sodium Bicarbonate → HCID 11231258, Verbindung
Reaktionsgleichung
[NH2:1][C:2]1[N:3]=[C:4](Cl)[C:5]2[CH:10]=[CH:9][N:8]([C@@H:11]3[O:17][C@H:16]([CH2:18][OH:19])[C@@H:14]([OH:15])[C@H:12]3O)[C:6]=2[N:7]=1.O.CC#N.[C:25](OC(C)(C)C(Br)=O)(=[O:27])C.C([O-])(O)=O.[Na+]>C(#N)C>[NH2:1][C:2]1[N:3]=[C:4]([O:27][CH3:25])[C:5]2[CH:10]=[CH:9][N:8]([C@@H:11]3[O:17][C@H:16]([CH2:18][OH:19])[C@H:14]4[O:15][C@@H:12]34)[C:6]=2[N:7]=1Komponenten
Versuchsvorschrift
To a mixture of 2-amino-7-(β-D-ribofuranosyl)-4-chloro-7H-pyrrolo[2,3-d]pyrimidine (1.8 g, 6.0 mmol) in acetonitrile (80 mL) were added a solution of H2O/CH3CN (1:9, 1.08 mL) and then α-acetoxyisobutyryl bromide (3.5 mL, 24 mmol). After 2 h stirring at room temperature, saturated aqueous NaHCO3 (170 mL) was added and the mixture was extracted with EtOAc (300+200 mL). The combined organic phase was washed with brine (100 mL), dried (Na2SO4) and evaporated to a pale yellow foamy residue. This was suspended in anhydrous MeOH (80 mL) and stirred overnight with 25 mL of DOWEX OH resin (previously washed with anhydrous MeOH). The resin was filtered, washed thoroughly with MeOH and the combined filtrate evaporated to give a pale yellow foam (1.92 g).
Aufarbeitung
- extractionthe mixture was extracted with EtOAc (300+200 mL)
- washThe combined organic phase was washed with brine (100 mL)
- dry with materialdried (Na2SO4)
- customevaporated to a pale yellow foamy residue
- stirringstirred overnight with 25 mL of DOWEX OH resin (
- washpreviously washed with anhydrous MeOH)
- filtrationThe resin was filtered
- washwashed thoroughly with MeOH
- customthe combined filtrate evaporated
Quellen und Nachweise
- ORD-Eintrag
- ord-424aa4319ca14bd9a899b6268c7dafc6
- Quelldatensatz
- uspto-grants-2004_08
- Patentnummer
- US06777395B2
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