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

HRID 974268Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 974268
[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.[CH3:29][C:30]1[CH:38]=[CH:37][C:33]([C:34](Cl)=[O:35])=[CH:32][CH:31]=1>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:34](=[O:35])[C:33]3[CH:37]=[CH:38][C:30]([CH3:29])=[CH:31][CH:32]=3)[O:16]2)[CH2:2][CH2:3]1

Komponenten

6

Edukt 3

HCID 8471TriethylamineHCID 134054-Methylbenzoyl ChlorideHCID 18649770HCID 18649770, Verbindung

Produkt 1

HCID 566389576-(cyclopropylmethylamino)-9-[(2R,5S)-5-[(p-methylbenzoyloxy)-methyl]-tetrahydro-2-furyl]-9H-purineAusbeute 81 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

6-(Cyclopropylmethylamino)-9-[(2R,5S)-tetrahydro-5-(hydroxymethyl)-2-furyl]-9H-purine (0.295 g, 1.0 mmoles), 4-dimethylaminopyridine (20 mg, 0.2 mmoles, Aldrich Chemical Co., Madison, Wis.), and triethylamine (2.0 mL, 14 mmoles, Aldrich Chemical Co., Madison, Wis.) were dissolved in 50 mL acetonitrile. p-Methylbenzoyl chloride (1.08 mL, 7.0 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 suspended in ethyl acetate and undissolved salts were removed by filtration. The filtrate was concentrated and applied to preparative silica gel plates (20×20×0.2 cm). The plates were developed in a mixture of chloroform:acetone (95:5). The product was scraped from the preparative plate and eluted from the silica gel with ethanol. The product was further purified by flash chromatography on a silica gel column (2.5×40 cm) with a mixture of chloroform:methanol (98:2). Lyophilization afforded 0.330 g of 6-(cyclopropylmethylamino)-9-[(2R,5S)-5-[(p-methylbenzoyloxy)-methyl]-tetrahydro-2-furyl]-9H-purine as an oil (78% yield).

Aufarbeitung

  1. customThe reaction was quenched with methanol and solvents
  2. customwere evaporated in vacuo
  3. customundissolved salts were removed by filtration
  4. concentrationThe filtrate was concentrated
  5. additionThe plates were developed in a mixture of chloroform:acetone (95:5)
  6. washeluted from the silica gel with ethanol
  7. customThe product was further purified by flash chromatography on a silica gel column (2.5×40 cm) with a mixture of chloroform:methanol (98:2)

Quellen und Nachweise

ORD-Eintrag
ord-8340a03c622b48d79cf7a4fcda21536e
Quelldatensatz
uspto-grants-1991_11
Patentnummer
US05068320

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