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Sodium hydride → 6-{[(1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]-oxy}methyl)cyclopentyl]oxy}-9-(tetrahydro-2H-pyran-2-yl)-9H-purine

HRID 447686
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 447686
[H-].[Na+].[Si:3]([O:10][C@@H:11]1[C@H:15]([CH2:16][O:17][Si:18]([C:21]([CH3:24])([CH3:23])[CH3:22])([CH3:20])[CH3:19])[CH2:14][C@@H:13]([OH:25])[CH2:12]1)([C:6]([CH3:9])([CH3:8])[CH3:7])([CH3:5])[CH3:4].Cl[C:27]1[N:35]=[CH:34][N:33]=[C:32]2[C:28]=1[N:29]=[CH:30][N:31]2[CH:36]1[CH2:41][CH2:40][CH2:39][CH2:38][O:37]1>CN(C=O)C>[Si:3]([O:10][C@@H:11]1[C@H:15]([CH2:16][O:17][Si:18]([C:21]([CH3:24])([CH3:23])[CH3:22])([CH3:19])[CH3:20])[CH2:14][C@@H:13]([O:25][C:27]2[N:35]=[CH:34][N:33]=[C:32]3[C:28]=2[N:29]=[CH:30][N:31]3[CH:36]2[CH2:41][CH2:40][CH2:39][CH2:38][O:37]2)[CH2:12]1)([C:6]([CH3:9])([CH3:8])[CH3:7])([CH3:5])[CH3:4]
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Komponenten

5

Edukt 3

HCID 24758Sodium hydrideHCID 977406-chloro-9-(tetrahydro-2H-pyran-2-yl)-9H-purineHCID 59671236(1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]oxy}methyl)cyclopentanol

Produkt 1

HCID 596712146-{[(1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]-oxy}methyl)cyclopentyl]oxy}-9-(tetrahydro-2H-pyran-2-yl)-9H-purine

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel3×

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

In DMF (4 mL, 0.05 mol) was suspended sodium hydride (47 mg, 0.0012 mol) at 0° C., to which was added a solution of (1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]oxy}methyl)cyclopentanol (0.200 g, 0.000554 mol) in 2.5 mL DMF. The mixture was stirred at 0° C. for 10 minutes and was added a solution of 6-Chloro-9-(tetrahydropyranyl)purine (0.265 g, 0.00111 mol) (Example 33, step b) in 4 mL DMF. The reaction was stirred at 0° C. for 1 h and warmed to 23° C. overnight. The reaction was quenched by addition of saturated aqueous NH4Cl, and the mixture was extracted with ethyl acetate, washed with brine, dried (Na2SO4), filtered and concentrated. The residue was purified by flash chromatography (0 to 5% acetone/toluene) to obtain 271 mg (86.8%).

Aufarbeitung

  1. customat 0° C.
  2. stirringThe reaction was stirred at 0° C. for 1 h
  3. temperaturewarmed to 23° C. overnight
  4. customThe reaction was quenched by addition of saturated aqueous NH4Cl
  5. extractionthe mixture was extracted with ethyl acetate
  6. washwashed with brine
  7. dry with materialdried (Na2SO4)
  8. filtrationfiltered
  9. concentrationconcentrated
  10. customThe residue was purified by flash chromatography (0 to 5% acetone/toluene)
  11. customto obtain 271 mg (86.8%)

Quellen und Nachweise

ORD-Eintrag
ord-b3f8801d6f1b4e7ea5a11467d926042b
Quelldatensatz
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08481550B2

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