Imidazole → 3-Tert-butyldimethylsilyloxy-17-cyclopropylmethyl-4,5alpha-epoxy-14beta-hydroxy-6-oxomorphinan

HRID 430704

Reaktionsgleichung

Reaktionsgleichung von HRID 430704
[CH:1]1[C:6]2[CH2:7][C@H:8]3[N:13]([CH2:14][CH:15]4[CH2:17][CH2:16]4)[CH2:12][CH2:11][C@:10]45[C@H:18]([C:20]([CH2:22][CH2:23][C@@:9]34[OH:24])=[O:21])[O:19][C:4]([C:5]=25)=[C:3]([OH:25])[CH:2]=1.Cl.N1C=CN=C1.[C:32]([Si:36]([CH3:39])([CH3:38])Cl)([CH3:35])([CH3:34])[CH3:33].O>C(OCC)C>[Si:36]([O:25][C:3]1[CH:2]=[CH:1][C:6]2[CH2:7][C@H:8]3[N:13]([CH2:14][CH:15]4[CH2:17][CH2:16]4)[CH2:12][CH2:11][C@:10]45[C:5]=2[C:4]=1[O:19][C@H:18]4[C:20](=[O:21])[CH2:22][CH2:23][C@@:9]35[OH:24])([C:32]([CH3:35])([CH3:34])[CH3:33])([CH3:39])[CH3:38]

Komponenten

6

Edukt 4

HCID 795ImidazoleHCID 962WaterHCID 28928tert-Butyldimethylsilyl chlorideHCID 5485201Naltrexone Hydrochloride

Produkt 1

HCID 143947793-Tert-butyldimethylsilyloxy-17-cyclopropylmethyl-4,5alpha-epoxy-14beta-hydroxy-6-oxomorphinanAusbeute 76 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3283Diethyl EtherLösungsmittel

Versuchsvorschrift

3.49 g of naltrexone hydrochloride was suspended in 10.5 ml of N,N-dimethylfonnamde. After adding 3.46 g of imidazole, 3.48 g of tert-butyldimethylchlorosilane was added followed by stirring for 35 minutes at room temperature. 30 ml of water and 50 ml of diethyl ether were added to the reaction system followed by separation. The aqueous layer was extracted twice with 30 ml of diethyl ether. The combined extracts were dried over anhydrous sodium sulfate and concentrated. The resulting residue was recrystallized from ethanol to obtain 3.2 g of the target compound (yield: 76%).

Aufarbeitung

  1. additionwas added
  2. customfollowed by separation
  3. extractionThe aqueous layer was extracted twice with 30 ml of diethyl ether
  4. dry with materialThe combined extracts were dried over anhydrous sodium sulfate
  5. concentrationconcentrated
  6. customThe resulting residue was recrystallized from ethanol

Quellen und Nachweise

ORD-Eintrag
ord-729b126d6f8d4bf79da0b2f86e57e8d0
Quelldatensatz
uspto-grants-2001_11
Patentnummer
US06323212B1

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