Beta-Alanine → 3-{[1-(4-Cyano-benzyl)-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl]-amino}-propionic acid

HRID 919904Notes

Reaction equation

HRID 919904 reaction equation
CO[C:3]([C:5]1[C:6]([OH:31])=[C:7]2[C:12](=[CH:13][N:14]=1)[N:11]([CH2:15][C:16]1[CH:21]=[CH:20][C:19]([C:22]#[N:23])=[CH:18][CH:17]=1)[C:10](=[O:24])[C:9]([C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)=[CH:8]2)=[O:4].[NH2:32][CH2:33][CH2:34][C:35]([OH:37])=[O:36].C[O-].[Na+]>>[C:22]([C:19]1[CH:20]=[CH:21][C:16]([CH2:15][N:11]2[C:12]3[C:7](=[C:6]([OH:31])[C:5]([C:3]([NH:32][CH2:33][CH2:34][C:35]([OH:37])=[O:36])=[O:4])=[N:14][CH:13]=3)[CH:8]=[C:9]([C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)[C:10]2=[O:24])=[CH:17][CH:18]=1)#[N:23]

Participants

4

Reactant 3

HCID 239Beta-AlanineHCID 10942334Sodium MethoxideHCID 682972731-(4-Cyano-benzyl)-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester

Product 1

HCID 682975163-{[1-(4-Cyano-benzyl)-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl]-amino}-propionic acidYield 68.2%

Procedure

A mixture of 1-(4-cyano-benzyl)-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (40 mg, 0.097 mmol), β-alanine (694 mg, 7.9 mmol) and NaOMe solution (12 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 dissolved in saturated NaHCO3 and washed several times with ether. The aqueous layer was acidified to pH 2 with 6 M HCl, and the resulting precipitate was isolated by filtration to give 31 mg of the title compound as a brown solid. MS: (−) m/z 467.24 (M−1).

Workup

  1. temperaturewas refluxed for 16 h
  2. customthe solvent was evaporated in vacuo
  3. dissolutionThe residue was dissolved in saturated NaHCO3
  4. washwashed several times with ether
  5. customthe resulting precipitate was isolated by filtration

Sources & evidence

ORD record
ord-f02e689edd5542dbbd39522c42419492
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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