(R)-3-aminobutanoic acid → (R)-3-[(1-Benzyl-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-butyric acid

HRID 919890Notes

Reaction equation

HRID 919890 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:28]=[CH:27][CH:26]=[CH:25][CH:24]=1)=[CH:8]2)=[O:4].[NH2:30][C@H:31]([CH3:36])[CH2:32][C:33]([OH:35])=[O:34].C[O-].[Na+]>COCCO>[CH2:15]([N:11]1[C:12]2[C:7](=[C:6]([OH:29])[C:5]([C:3]([NH:30][C@H:31]([CH3:36])[CH2:32][C:33]([OH:35])=[O:34])=[O:4])=[N:14][CH:13]=2)[CH:8]=[C:9]([C:23]2[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=2)[C:10]1=[O:22])[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1

Participants

5

Reactant 3

HCID 5706670(R)-3-aminobutanoic acidHCID 10942334Sodium MethoxideHCID 682973581-Benzyl-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester

Product 1

HCID 68297478(R)-3-[(1-Benzyl-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-butyric acidYield 68%

Reagents, catalysts & solvents 1

HCID 80192-MethoxyethanolSolvent

Procedure

A mixture of 1-benzyl-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (35 mg, 0.090 mmol), (R)-3-amino-butyric acid (94 mg, 0.90 mmol) and NaOMe (39 mg, 0.73 mmol) in 2-methoxyethanol (10 mL) was refluxed for 3 h. After the mixture was cooled to r.t., the solvent was evaporated in vacuo. The residue was dissolved in saturated NaHCO3 and washed with ether. The aqueous layer was acidified to pH about 2 with 6 M HCl, and the resulting precipitate was isolated by filtration to give 28 mg of the title compound as a yellow solid. MS: (+) m/z 458.30 (M+1).

Workup

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

Sources & evidence

ORD record
ord-aea8d2f07fe249548a45dc9ed7723314
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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