N-[(2,6-dichlorophenyl)carbonyl]-4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanine methyl ester → RO-0505376

HRID 1936483Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1936483
C[O:2][C:3](=[O:36])[C@H:4]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([C:23]2[C:24](=[O:35])[N:25]([CH3:34])[C:26]([CH3:33])=[CH:27][C:28]=2[C:29]([F:32])([F:31])[F:30])=[CH:19][CH:18]=1)[NH:5][C:6]([C:8]1[C:13]([Cl:14])=[CH:12][CH:11]=[CH:10][C:9]=1[Cl:15])=[O:7]>C(O)C.[OH-].[Na+]>[Cl:15][C:9]1[CH:10]=[CH:11][CH:12]=[C:13]([Cl:14])[C:8]=1[C:6]([NH:5][C@H:4]([C:3]([OH:36])=[O:2])[CH2:16][C:17]1[CH:18]=[CH:19][C:20]([C:23]2[C:24](=[O:35])[N:25]([CH3:34])[C:26]([CH3:33])=[CH:27][C:28]=2[C:29]([F:31])([F:32])[F:30])=[CH:21][CH:22]=1)=[O:7]

Komponenten

4

Edukt 1

HCID 69714407N-[(2,6-dichlorophenyl)carbonyl]-4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanine methyl ester

Produkt 1

HCID 9806910RO-0505376Ausbeute 92,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 702EthanolLösungsmittelHCID 14798Sodium HydroxideLösungsmittel

Versuchsvorschrift

To a suspension of N-[(2,6-dichlorophenyl)carbonyl]-4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanine methyl ester (177 mg, 0.326 mmol) in ethanol (6 mL) was added IN aqueous sodium hydroxide solution (4 mL) at room temperature. The mixture was stirred for 5 h. Then, the ethanol was removed under vacuum and the residue was diluted with water (20 mL). The aqueous solution was washed with diethyl ether (50 mL) to remove any neutral impurities. The aqueous layer was acidified with 1.0 N HCl and the product was extracted with ethyl acetate (2×50 mL). The combined organic extracts were washed with brine solution (50 mL) and were dried over anhydrous magnesium sulfate. Filtration of the drying agent and concentration afforded 159 mg (92% yield) of N-[(2,6-dichlorophenyl)carbonyl]-4-[1,6-dimethyl-4-(trifluoromethyl)-2-oxo-3-pyridinyl]-L-phenylalanine as a white solid: mp 238-240° C. ES-HRMS m/e calcd for C24H19Cl2F3N2O4 (M+Na) 549.0567, found 549.0570.

Aufarbeitung

  1. customThen, the ethanol was removed under vacuum
  2. additionthe residue was diluted with water (20 mL)
  3. washThe aqueous solution was washed with diethyl ether (50 mL)
  4. customto remove any neutral impurities
  5. extractionthe product was extracted with ethyl acetate (2×50 mL)
  6. washThe combined organic extracts were washed with brine solution (50 mL)
  7. dry with materialwere dried over anhydrous magnesium sulfate
  8. filtrationFiltration of the drying agent and concentration

Quellen und Nachweise

ORD-Eintrag
ord-be2dee388c7949a68178304c0a1a57a6
Quelldatensatz
uspto-grants-2002_05
Patentnummer
US06388084B1

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