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Trifluoroacetic acid → 1-Benzyl-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid (2-formylamino-ethyl)-amide

HRID 1410841
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1410841
C([O:5][C:6](=O)[NH:7][CH2:8][CH2:9][NH:10][C:11]([C:13]1[C:14]([OH:37])=[C:15]2[C:20](=[CH:21][N:22]=1)[N:19]([CH2:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[C:18](=[O:30])[C:17]([C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1)=[CH:16]2)=[O:12])(C)(C)C.FC(F)(F)C(O)=O.C(N(CC)CC)C.C(OCC)=O>C(Cl)Cl.C1COCC1>[CH:6]([NH:7][CH2:8][CH2:9][NH:10][C:11]([C:13]1[C:14]([OH:37])=[C:15]2[C:20](=[CH:21][N:22]=1)[N:19]([CH2:23][C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1)[C:18](=[O:30])[C:17]([C:31]1[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=1)=[CH:16]2)=[O:12])=[O:5]
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Komponenten

7

Edukt 4

HCID 6422Trifluoroacetic acidHCID 8025Ethyl formateHCID 8471TriethylamineHCID 68297633{2-[(1-Benzyl-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-ethyl}-carbamic acid tert-butyl ester

Produkt 1

HCID 867141321-Benzyl-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid (2-formylamino-ethyl)-amide
Ausbeute 37,9 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6344DichloromethaneLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

{2-[(1-Benzyl-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-ethyl}-carbamic acid tert-butyl ester (35 mg, 0.068 mmol) was dissolved in CH2Cl2 (2 mL). Trifluoroacetic acid (1 mL) was added, and the mixture was stirred for 2 h. Solvent and excess TFA was removed by evaporation, and to the residue were added THF (3 mL), triethylamine (0.050 mL, 0.34 mmol), and ethyl formate (3 mL). The resulting mixture was refluxed for 4 days. After cooling to r.t., solvent was evaporated. The residue was partitioned between EtOAc and 0.1 M HCl. The aqueous layer was extracted with additional EtOAc, and the organic layers were combined, dried over MgSO4 and concentrated. The crude product was purified by silica gel chromatography (0-5% MeOH/CH2Cl2) to give 11.4 mg of the title compound as a light yellow solid. MS: (+) m/z 443.37 (M+1)

Aufarbeitung

  1. customSolvent and excess TFA was removed by evaporation
  2. temperatureThe resulting mixture was refluxed for 4 days
  3. customsolvent was evaporated
  4. customThe residue was partitioned between EtOAc and 0.1 M HCl
  5. extractionThe aqueous layer was extracted with additional EtOAc
  6. dry with materialdried over MgSO4
  7. concentrationconcentrated
  8. customThe crude product was purified by silica gel chromatography (0-5% MeOH/CH2Cl2)

Quellen und Nachweise

ORD-Eintrag
ord-a0927bf4d051435d9d62c4f9bd0bf24f
Quelldatensatz
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08921389B2

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