Methyl 4-(3-amino-6-(1-(4-methoxybenzyl)-6-oxo-1,4,5,6-tetrahydropyridin-3-yl)pyrazin-2-yl)-2-fluorobenzoate → Methyl 4-(3-amino-6-(6-oxopiperidin-3-yl)pyrazin-2-yl)-2-fluorobenzoate
反応式
[NH2:1][C:2]1[C:3]([C:24]2[CH:33]=[CH:32][C:27]([C:28]([O:30][CH3:31])=[O:29])=[C:26]([F:34])[CH:25]=2)=[N:4][C:5]([C:8]2[CH2:13][CH2:12][C:11](=[O:14])[N:10](CC3C=CC(OC)=CC=3)[CH:9]=2)=[CH:6][N:7]=1>CO.[Pd]>[NH2:1][C:2]1[C:3]([C:24]2[CH:33]=[CH:32][C:27]([C:28]([O:30][CH3:31])=[O:29])=[C:26]([F:34])[CH:25]=2)=[N:4][C:5]([CH:8]2[CH2:13][CH2:12][C:11](=[O:14])[NH:10][CH2:9]2)=[CH:6][N:7]=1参加物
4
実験手順
Methyl 4-(3-amino-6-(1-(4-methoxybenzyl)-6-oxo-1,4,5,6-tetrahydropyridin-3-yl)pyrazin-2-yl)-2-fluorobenzoate (361 mg, 0.781 mmol) was dissolved in MeOH (Volume: 7 mL) and then Pd—C (400 mg, 3.76 mmol) was added. The mixture was evacuated and purged with hydrogen thrice and finally, the mixture was agitated under 1 atm of hydrogen overnight. The next morning, desired product along with over-reduced amino-pyrazine was obtained. The mixture was filter over celite and the filtrate concentrated in vacuo and the residue dissolved in DCM and agitated under air for 1 day and then concentrated and purified by flash chromatography (0-50% DCM/EtOAc) to afford 144 mg the desired product as a yellow solid. LCMS (m/z): (MH+), 465.1, 0.81 min.