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1-(3,5-Di-O-benzyl-4-C-(p-toluenesulphonyloxymethyl)-2-O-p-toluenesulphony-beta-D-ribofuranosyl)uracil → 1-(2-O-p-Toluenesulfonyl-4-C-(p-toluenesulfonyloxymethyl)-beta-D-ribofuranosyl)uracil

HRID 1797373
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1797373
C([O:8][C@@H:9]1[C@@:13]([CH2:23][O:24][S:25]([C:28]2[CH:33]=[CH:32][C:31]([CH3:34])=[CH:30][CH:29]=2)(=[O:27])=[O:26])([CH2:14][O:15]CC2C=CC=CC=2)[O:12][C@@H:11]([N:35]2[CH:42]=[CH:41][C:39](=[O:40])[NH:38][C:36]2=[O:37])[C@@H:10]1[O:43][S:44]([C:47]1[CH:52]=[CH:51][C:50]([CH3:53])=[CH:49][CH:48]=1)(=[O:46])=[O:45])C1C=CC=CC=1>C(O)C.[OH-].[Pd+2].[OH-]>[C:50]1([CH3:53])[CH:51]=[CH:52][C:47]([S:44]([O:43][C@@H:10]2[C@H:9]([OH:8])[C@@:13]([CH2:23][O:24][S:25]([C:28]3[CH:29]=[CH:30][C:31]([CH3:34])=[CH:32][CH:33]=3)(=[O:26])=[O:27])([CH2:14][OH:15])[O:12][C@H:11]2[N:35]2[CH:42]=[CH:41][C:39](=[O:40])[NH:38][C:36]2=[O:37])(=[O:46])=[O:45])=[CH:48][CH:49]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

4

Edukt 1

HCID 106051711-(3,5-Di-O-benzyl-4-C-(p-toluenesulphonyloxymethyl)-2-O-p-toluenesulphony-beta-D-ribofuranosyl)uracil

Produkt 1

HCID 118013911-(2-O-p-Toluenesulfonyl-4-C-(p-toluenesulfonyloxymethyl)-beta-D-ribofuranosyl)uracilAusbeute 51,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 9942167Palladium hydroxideKatalysatorHCID 702EthanolLösungsmittel

Versuchsvorschrift

To a solution of compound 75 (0.80 g, 1.0 mmol) in absolute ethanol (2 cm3) was added 20% palladium hydroxide over carbon (0.80 g) and the mixture was degassed several times with hydrogen and stirring was continued under hydrogen for 48 h. The catalyst was filtered off and the filtrate was evaporated under reduced pressure. The residue was purified by silica gel column chromatography using dichloromethane/methanol (99:1, v/v) as eluent to give nucleoside 76A (0.30 g, 49%) as a white solid material. δH (CD3OD) 7.67 (4H, m), 7.45 (1H, d, J 8.2 Hz), 7.34 (4H, m), 5.86 (1H, d, J 8.0 Hz), 5.40 (1H, d, J 8.1 Hz), 4.95 (1H, m), 4.35 (1H, d, J 5.0 Hz), 4.17 (2H, m), 3.61 (2H, s), δc (CD3OD) 165.4, 151.6, 147.5, 146.6, 141.3, 134.0, 133.8, 131,4, 130.9, 129.2, 128.9, 103.7, 88.0, 85.4, 80.7, 72.4, 71.0, 64.3, 21.7, 21.6. FAB-MS m/z 583 [M+H]+.

Aufarbeitung

  1. customthe mixture was degassed several times with hydrogen
  2. filtrationThe catalyst was filtered off
  3. customthe filtrate was evaporated under reduced pressure
  4. customThe residue was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-e77aa4690fbe4871bd7f19cfdfd2e509
Quelldatensatz
uspto-grants-2006_04
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07034133B2

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