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(2S)-5-amino-2-{[(tert-butoxy)carbonyl]amino}pentanoic acid → HCID 89545117, Verbindung

HRID 630655
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 630655
[CH2:1]([O:4][C:5](=[O:35])[C@H:6]([CH2:15][C:16]1[CH:21]=[CH:20][C:19]([O:22][C:23](OC2C=CC([N+]([O-])=O)=CC=2)=[O:24])=[CH:18][CH:17]=1)[NH:7][C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH:2]=[CH2:3].[C:36]([O:40][C:41]([NH:43][C@H:44]([C:49]([OH:51])=[O:50])[CH2:45][CH2:46][CH2:47][NH2:48])=[O:42])([CH3:39])([CH3:38])[CH3:37]>ClCCl>[CH2:1]([O:4][C:5](=[O:35])[C@@H:6]([NH:7][C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH2:15][C:16]1[CH:21]=[CH:20][C:19]([O:22][C:23]([NH:48][CH2:47][CH2:46][CH2:45][C@@H:44]([C:49]([OH:51])=[O:50])[NH:43][C:41]([O:40][C:36]([CH3:39])([CH3:37])[CH3:38])=[O:42])=[O:24])=[CH:18][CH:17]=1)[CH:2]=[CH2:3]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

4

Edukt 2

HCID 7018784(2S)-5-amino-2-{[(tert-butoxy)carbonyl]amino}pentanoic acidHCID 117612078Allyl-N-(tert-butoxycarbonyl)-O-[(4-nitrophenoxy)carbonyl]-L-tyrosinate

Produkt 1

HCID 89545117HCID 89545117, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
75 °C

Versuchsvorschrift

6.00 g (12.33 mmol) of the compound from example 1A was dissolved in 120 ml dichloromethane. 2.57 g (12.33 mmol) N2-(tert-Butoxycarbonyl)-L-ornithine was added. The reaction mixture was split into 6 portions. The portions were heated for 90 min in a sealed tube at 75° C. in a microwave synthesizer. The combined reaction mixture was extracted with approx. 100 ml saturated ammonium chloride solution. The aqueous phase was twice back extracted with approx. 30 ml dichloromethane each. The combined organic phases were extracted with approx. 50 ml brine and dried over sodium sulfate. The solvent was removed under reduced pressure. The raw product was dissolved in dichloromethane and chromatographed over approx. 600 ml silica gel. Solvents used were dichloromethane, dichloromethane/methanol 40/1 to dichloromethane/methanol 1/1. The product-containing fractions were combined and concentrated to dryness under reduced pressure. This gave 2.63 g (4.06 mmol, 33% of theory, 89% purity) of the desired product.

Aufarbeitung

  1. customThe reaction mixture was split into 6 portions
  2. customThe combined reaction mixture
  3. extractionwas extracted with approx. 100 ml saturated ammonium chloride solution
  4. extractionThe aqueous phase was twice back extracted with approx. 30 ml dichloromethane each
  5. extractionThe combined organic phases were extracted with approx. 50 ml brine
  6. dry with materialdried over sodium sulfate
  7. customThe solvent was removed under reduced pressure
  8. dissolutionThe raw product was dissolved in dichloromethane
  9. customchromatographed over approx. 600 ml silica gel
  10. concentrationconcentrated to dryness under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-d76b7cbf8ddd47de8d980f5f5495c92f
Quelldatensatz
uspto-grants-2016_04
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09315543B2

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