Sodium Methoxide → 3-[(7-Benzyl-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carbonyl)-amino]-2,2-dimethyl-propionic acid

HRID 919718Notes

Reaction equation

CO[C:3]([C:5]1[N:6]=[CH:7][C:8]2[C:9](=[O:23])[N:10]([CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[CH:11]=[CH:12][C:13]=2[C:14]=1[OH:15])=[O:4].OC(C(F)(F)F)=O.[NH2:31][CH2:32][C:33]([CH3:38])([CH3:37])[C:34]([OH:36])=[O:35].C[O-].[Na+]>CCO>[CH2:16]([N:10]1[C:9](=[O:23])[C:8]2[CH:7]=[N:6][C:5]([C:3]([NH:31][CH2:32][C:33]([CH3:38])([CH3:37])[C:34]([OH:36])=[O:35])=[O:4])=[C:14]([OH:15])[C:13]=2[CH:12]=[CH:11]1)[C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1

Participants

Conditions

Temperature: 150 °C

Procedure

A mixture of 7-benzyl-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl ester (40 mg, 0.13 mmol), 3-Amino-2,2-dimethyl-propionic acid TFA salt (120 mg, 0.52 mmol) and NaOMe (56 mg, 1.03 mmol) in EtOH (2 mL) was heated at 150° C. for 6 h in a CEM microwave reactor. Solvent was evaporated in vacuo, and the residue was partitioned between water and EtOAc. 1 M HCl was added with vigorous stirring until pH was about 2. The organic layer was dried over MgSO4 and concentrated. The crude product was purified by silica gel chromatography (0-40% EtOAc/hexanes+2% AcOH) to give 32 mg of the title compound as a yellow solid. MS: (+) m/z 396.15 (M+1).

Workup

customSolvent was evaporated in vacuo
customthe residue was partitioned between water and EtOAc
addition1 M HCl was added
dry with materialThe organic layer was dried over MgSO4
concentrationconcentrated
customThe crude product was purified by silica gel chromatography (0-40% EtOAc/hexanes+2% AcOH)

Sources & evidence

ORD record: ord-61e02daac8164a2cb0f794fe0ca8716a
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09271970B2

Reaction notes

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