Glycine → [(1-Benzyl-5-hydroxy-2-oxo-3,8-diphenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-acetic acid

HRID 919689Notes

Reaction equation

HRID 919689 reaction equation
C[O:2][C:3]([C:5]1[C:6]([OH:35])=[C:7]2[C:12](=[C:13]([C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=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.[NH2:36][CH2:37][C:38]([OH:40])=[O:39].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][C:38]([OH:40])=[O:39])=[O:2])=[N:14][C:13]=2[C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH:8]=[C:9]([C:29]2[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=2)[C:10]1=[O:28])[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1

Participants

4

Reactant 3

HCID 750GlycineHCID 10942334Sodium MethoxideHCID 682974311-Benzyl-5-hydroxy-2-oxo-3,8-diphenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester

Product 1

HCID 68297577[(1-Benzyl-5-hydroxy-2-oxo-3,8-diphenyl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl)-amino]-acetic acidYield 47.5%

Procedure

A mixture of 1-benzyl-5-hydroxy-2-oxo-3,8-diphenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (70 mg, 0.15 mmol), glycine (2.73 g, 36 mmol) and NaOMe solution (55 mL, 27 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 with ether. The aqueous layer was acidified with 4 M HCl, and the resulting mixture was extracted with EtOAc. The organic layer was dried over MgSO4 and concentrated. The solid obtained was further purified by silica gel chromatography (0-70% EtOAc/hexanes+2% AcOH) to give 36 mg of the title compound. MS: (+) m/z 506.13 (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 with ether
  5. extractionthe resulting mixture was extracted with EtOAc
  6. dry with materialThe organic layer was dried over MgSO4
  7. concentrationconcentrated
  8. customThe solid obtained
  9. customwas further purified by silica gel chromatography (0-70% EtOAc/hexanes+2% AcOH)

Sources & evidence

ORD record
ord-dd5425f3dd194e449706d140c317f3cf
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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