1,1-Dimethylethyl 4-[({[6-amino-5-chloro-2-(methyloxy)-3-pyridinyl]carbonyl}amino)methyl]-1-piperidinecarboxylate → 6-amino-5-chloro-2-oxo-N-(4-piperidinylmethyl)-1,2-dihydro-3-pyridinecarboxamide dihydrochloride
反応式
[NH2:1][C:2]1[N:7]=[C:6]([O:8]C)[C:5]([C:10]([NH:12][CH2:13][CH:14]2[CH2:19][CH2:18][N:17](C(OC(C)(C)C)=O)[CH2:16][CH2:15]2)=[O:11])=[CH:4][C:3]=1[Cl:27]>Cl>[ClH:27].[ClH:27].[NH2:1][C:2]1[NH:7][C:6](=[O:8])[C:5]([C:10]([NH:12][CH2:13][CH:14]2[CH2:19][CH2:18][NH:17][CH2:16][CH2:15]2)=[O:11])=[CH:4][C:3]=1[Cl:27]参加物
3
実験手順
A suspension of 1,1-dimethylethyl 4-[({[6-amino-5-chloro-2-(methyloxy)-3-pyridinyl]carbonyl}amino)methyl]-1-piperidinecarboxylate (step 1, 350 mg, 0.88 mmol) in aqueous 2 N hydrochloric acid (20 ml) was refluxed with stirring for 12 h. After cooling to room temperature, the solvent was removed in vacuo. The residue was crystallized from methanol/diisopropyl ether to give 275 mg (88%) of the title compound as a gray powder.