Acetic Acid → HCID 56847104, compound

Reaction equation

[CH2:1]([NH:8][C:9]([N:11]1[CH2:20][CH2:19][C:18]2[N:17]=[C:16]([C:21](OC)=[O:22])[CH:15]=[CH:14][C:13]=2[CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[K].[NH2:26][OH:27].C(O)(=O)C>CO>[CH2:1]([NH:8][C:9]([N:11]1[CH2:20][CH2:19][C:18]2[N:17]=[C:16]([C:21]([NH:26][OH:27])=[O:22])[CH:15]=[CH:14][C:13]=2[CH2:12]1)=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

Procedure

To a vial containing methyl 6-(benzylcarbamoyl)-5,6,7,8-tetrahydro-1,6-naphthyridine-2-carboxylate was added MeOH (1 mL) and hydroxylamine potassium salt (1 mL, 1.76 mmol, 1.76 M in MeOH) and the resulting mixture was shaken at rt for 13 h. The solution was quenched with acetic acid (0.200 mL, 3.52 mmol) before being concentrated. To the resulting residue was added DMSO (1.2 mL) and it was purified via prep-HPLC to yield N6-benzyl-N2-hydroxy-7,8-dihydro-1,6-naphthyridine-2,6(5 H)-dicarboxamide (0.0113 g, 36.0%). LC-MS: (FA) ES+ 327; 1H NMR (Methanol-d4, 400 MHz) δ 7.86 (d, J=7.8 Hz, 1 H), 7.70 (d, J=8.0 Hz, 1 H), 7.25-7.19 (m, 5 H), 4.68 (s, 2 H), 4.39 (s, 2 H), 3.79 (t, J=6.0 Hz, 2 H), 3.03 (t, J=6.0 Hz, 2 H).