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

HRID 919844Notes

Reaction equation

HRID 919844 reaction equation
CO[C:3]([C:5]1[C:6]([OH:29])=[C:7]2[C:12](=[CH:13][N:14]=1)[N:11]([CH2:15][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1)[C:10](=[O:22])[C:9]([C:23]1[CH:24]=[N:25][CH:26]=[CH:27][CH:28]=1)=[CH:8]2)=[O:4].[NH2:30][CH2:31][CH2:32][C:33]([OH:35])=[O:34].C[O-].[Na+]>>[CH2:15]([N:11]1[C:12]2[C:7](=[C:6]([OH:29])[C:5]([C:3]([NH:30][CH2:31][CH2:32][C:33]([OH:35])=[O:34])=[O:4])=[N:14][CH:13]=2)[CH:8]=[C:9]([C:23]2[CH:24]=[N:25][CH:26]=[CH:27][CH:28]=2)[C:10]1=[O:22])[C:16]1[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=1

Participants

4

Reactant 3

HCID 239Beta-AlanineHCID 10942334Sodium MethoxideHCID 682974081-Benzyl-5-hydroxy-2-oxo-3-pyridin-3-yl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester

Product 1

HCID 601515423-[(1-Benzyl-5-hydroxy-2-oxo-3-pyridin-3-yl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-propionic acidYield 47.5%

Procedure

A mixture of 1-benzyl-5-hydroxy-2-oxo-3-pyridin-3-yl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (35 mg, 0.090 mmol), β-alanine (806 mg, 9.0 mmol) and NaOMe solution (13.6 mL, 6.78 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 water and washed several times with ether. The aqueous layer was acidified to pH about 3-4 with 1 M HCl, and the resulting precipitate was isolated by filtration to give 19 mg of the title compound. MS: (+) m/z 445.33 (M+1).

Workup

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

Sources & evidence

ORD record
ord-2ab5e312e60f4cdcaf412c95893a1624
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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