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

HRID 919948Notes

Reaction equation

HRID 919948 reaction equation
CO[C:3]([C:5]1[C:6]([OH:35])=[C:7]2[C:12](=[C:13]([C:15]3[CH:16]=[N:17][CH:18]=[N:19][CH:20]=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+]>>[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:20]=[N:19][CH:18]=[N:17][CH:16]=2)[CH:8]=[C:9]([C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=2)[C:10]1=[O:28])[C:22]1[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=1

Participants

4

Reactant 3

HCID 239Beta-AlanineHCID 10942334Sodium MethoxideHCID 682977701-Benzyl-5-hydroxy-2-oxo-3-phenyl-8-pyrimidin-5-yl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester

Product 1

HCID 682973253-[(1-Benzyl-5-hydroxy-2-oxo-3-phenyl-8-pyrimidin-5-yl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-propionic acidYield 43.5%

Procedure

A mixture of 1-benzyl-5-hydroxy-2-oxo-3-phenyl-8-pyrimidin-5-yl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (35 mg, 0.075 mmol), β-alanine (672 mg, 7.54 mmol) and NaOMe solution (11 mL, 5.66 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 4. The aqueous layer was extracted with additional EtOAc, and the organic layers were combined, dried over MgSO4 and concentrated. The residue was dissolved in saturated NaHCO3 and washed several times with ether. The aqueous layer was acidified to pH about 4, and the resulting precipitate was isolated by filtration to give 17 mg of the title compound as a yellow solid. MS: (+) m/z 522.23 (M+1).

Workup

  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. dissolutionThe residue was dissolved in saturated NaHCO3
  9. washwashed several times with ether
  10. customthe resulting precipitate was isolated by filtration

Sources & evidence

ORD record
ord-eeee59c457bc4869824ab2503fe9ec7f
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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