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

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

Reactant 3

HCID 750Glycine

HCID 10942334Sodium Methoxide

HCID 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).