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Beta-Alanine → 3-[(1-Benzyl-5-hydroxy-2-oxo-3-phenyl-8-pyridin-4-yl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-propionic acid

HRID 919964
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 919964
CO[C:3]([C:5]1[C:6]([OH:35])=[C:7]2[C:12](=[C:13]([C:15]3[CH:20]=[CH:19][N:18]=[CH:17][CH:16]=3)[N:14]=1)[N:11]([CH2:21][C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)[C:10](=[O:28])[C:9]([C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)=[CH:8]2)=[O:4].[NH2:36][CH2:37][CH2:38][C:39]([OH:41])=[O:40].C[O-].[Na+]>C([O-])(O)=O.[Na+]>[CH2:21]([N:11]1[C:12]2[C:7](=[C:6]([OH:35])[C:5]([C:3]([NH:36][CH2:37][CH2:38][C:39]([OH:41])=[O:40])=[O:4])=[N:14][C:13]=2[C:15]2[CH:16]=[CH:17][N:18]=[CH:19][CH:20]=2)[CH:8]=[C:9]([C:29]2[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=2)[C:10]1=[O:28])[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1
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Komponenten

5

Edukt 3

HCID 239Beta-AlanineHCID 10942334Sodium MethoxideHCID 1363772431-Benzyl-5-hydroxy-2-oxo-3-phenyl-8-pyridin-4-yl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester

Produkt 1

HCID 1363772443-[(1-Benzyl-5-hydroxy-2-oxo-3-phenyl-8-pyridin-4-yl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-propionic acidAusbeute 34,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 516892
Sodium Bicarbonate
Lösungsmittel

Versuchsvorschrift

A mixture of 1-benzyl-5-hydroxy-2-oxo-3-phenyl-8-pyridin-4-yl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (36 mg, 0.078 mmol), β-alanine (693 mg, 7.8 mmol) and NaOMe solution (11.7 mL, 5.8 mmol, 0.5 M in MeOH) was refluxed for 16 h. After the mixture was cooled to r.t., the solvent was evaporated in vacuo. The residue was partitioned between EtOAc and water. 1 M HCl was added with vigorous stirring until pH was about 3-4. 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 (20-100% EtOAc/hexanes+1% AcOH). The product isolated was dissolved in saturated NaHCO3 and washed several times with ether. The aqueous layer was acidified to pH about 3-4, and the resulting precipitate was isolated by filtration to give 14 mg of the title compound as a light yellow solid. MS: (+) m/z 521.34 (M+1).

Aufarbeitung

  1. temperaturewas refluxed for 16 h
  2. customthe solvent was evaporated in vacuo
  3. customThe residue was partitioned between EtOAc and water
  4. addition1 M HCl was added
  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 (20-100% EtOAc/hexanes+1% AcOH)
  9. customThe product isolated
  10. washwashed several times with ether
  11. customthe resulting precipitate was isolated by filtration

Quellen und Nachweise

ORD-Eintrag
ord-0645e86d90ac431eb8458073311a389b
Quelldatensatz
uspto-grants-2016_03
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09271970B2

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