Triethylamine → 6-(cyclopropylmethylamino)-9-[(2R,5S)-5-[(heptanoyloxy)methyl]-tetrahydro-2-furyl]-9H-purine

HRID 974264Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 974264
[CH:1]1([CH2:4][NH:5][C:6]2[N:14]=[CH:13][N:12]=[C:11]3[C:7]=2[N:8]=[CH:9][N:10]3[C@H:15]2[CH2:19][CH2:18][C@@H:17]([CH2:20][OH:21])[O:16]2)[CH2:3][CH2:2]1.C(N(CC)CC)C.[C:29](Cl)(=[O:36])[CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH3:35]>CN(C)C1C=CN=CC=1.C(#N)C>[CH:1]1([CH2:4][NH:5][C:6]2[N:14]=[CH:13][N:12]=[C:11]3[C:7]=2[N:8]=[CH:9][N:10]3[C@H:15]2[CH2:19][CH2:18][C@@H:17]([CH2:20][O:21][C:29](=[O:36])[CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH3:35])[O:16]2)[CH2:2][CH2:3]1

Komponenten

6

Edukt 3

HCID 8471TriethylamineHCID 17313Heptanoyl chlorideHCID 18649770HCID 18649770, Verbindung

Produkt 1

HCID 566244516-(cyclopropylmethylamino)-9-[(2R,5S)-5-[(heptanoyloxy)methyl]-tetrahydro-2-furyl]-9H-purineAusbeute 51,4 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

6-(Cyclopropylmethylamino)-9-[(2R,5S)-tetrahydro-5-(hydroxymethyl)-2-furyl]-9H-purine (0.310 g, 1.1 mmoles), 4-dimethylaminopyridine (10 mg, 0.1 mmoles, Aldrich Chemical Co., Madison, Wis.), and triethylamine (1.0 mL, 7 mmoles, Aldrich Chemical Co., Madison, Wis.) were dissolved in 50 mL acetonitrile. Heptanoyl chloride (800 μm, 5.0 mmoles, Aldrich Chemical Co., Madison, Wis.) was added and the reaction was stirred at room temperature for 6 hours. The reaction was quenched with methanol and solvents were evaporated in vacuo. The residue was dissolved in acetone and passed over a silica gel column (4.8×13 cm). The product containing fractions were combined, concentrated, and loaded onto preparative silica gel plates (20×20×0.2 cm). The plates were developed in a mixture of chloroform:acetone (80:20). The product was scraped from the preparative plate (Rf 0.5) and eluted from the silica gel with ethanol. After evaporation of the solvent the product was further purified on a Chromatotron (2 mm silica gel plate) with a mixture of hexane:acetone (80:20). Lyophilization afforded 0.227 g of 6-(cyclopropylmethylamino)-9-[(2R,5S)-5-[(heptanoyloxy)methyl]-tetrahydro-2-furyl]-9H-purine as an oil (51% yield).

Aufarbeitung

  1. customThe reaction was quenched with methanol and solvents
  2. customwere evaporated in vacuo
  3. dissolutionThe residue was dissolved in acetone
  4. additionThe product containing fractions
  5. concentrationconcentrated
  6. additionThe plates were developed in a mixture of chloroform:acetone (80:20)
  7. washeluted from the silica gel with ethanol
  8. customAfter evaporation of the solvent the product
  9. customwas further purified on a Chromatotron (2 mm silica gel plate) with a mixture of hexane:acetone (80:20)

Quellen und Nachweise

ORD-Eintrag
ord-e7acfd775fd046f585dadb14541c7014
Quelldatensatz
uspto-grants-1991_11
Patentnummer
US05068320

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