Gamma-Aminobutyric Acid → 4-[(1-Benzyl-8-cyano-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-butyric acid

HRID 919705Notes

Reaction equation

HRID 919705 reaction equation
CO[C:3]([C:5]1[C:6]([OH:31])=[C:7]2[C:12](=[C:13]([C:15]#[N:16])[N:14]=1)[N:11]([CH2:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=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][CH2:35][C:36]([OH:38])=[O:37].C[O-].[Na+]>>[CH2:17]([N:11]1[C:12]2[C:7](=[C:6]([OH:31])[C:5]([C:3]([NH:32][CH2:33][CH2:34][CH2:35][C:36]([OH:38])=[O:37])=[O:4])=[N:14][C:13]=2[C:15]#[N:16])[CH:8]=[C:9]([C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)[C:10]1=[O:24])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Participants

4

Reactant 3

HCID 119Gamma-Aminobutyric AcidHCID 10942334Sodium MethoxideHCID 682976531-Benzyl-8-cyano-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester

Product 1

HCID 601526364-[(1-Benzyl-8-cyano-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-butyric acidYield 65.9%

Procedure

A mixture of 1-benzyl-8-cyano-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (45 mg, 0.11 mmol), 4-aminobutyric acid (3.76 g, 36.5 mmol) and NaOMe solution (54 mL, 27.4 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 water and EtOAc. 1M HCl was added with vigorous stirring until pH was about 1. The organic layer was dried over MgSO4 and concentrated. The crude was chromatographed (0-60% EtOAc/hexanes+2% AcOH) to give 35 mg of the title compound. MS: (+) m/z 483.16 (M+1).

Workup

  1. temperaturewas refluxed for 16 h
  2. customthe solvent was evaporated in vacuo
  3. customThe residue was partitioned between water and EtOAc
  4. addition1M HCl was added
  5. dry with materialThe organic layer was dried over MgSO4
  6. concentrationconcentrated
  7. customThe crude was chromatographed (0-60% EtOAc/hexanes+2% AcOH)

Sources & evidence

ORD record
ord-a9df4027f28d43208a17ac9b3983a784
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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