5-chloro-N-methoxy-8-[4-(2-methoxyethyl)piperazin-1-yl]-N-methylquinoline-7-carboxamide → 1-{5-Chloro-8-[4-(2-methoxyethyl)piperazin-1-yl]quinolin-7-yl}ethanone
反応式
[Cl:1][C:2]1[CH:11]=[C:10]([C:12](N(OC)C)=[O:13])[C:9]([N:18]2[CH2:23][CH2:22][N:21]([CH2:24][CH2:25][O:26][CH3:27])[CH2:20][CH2:19]2)=[C:8]2[C:3]=1[CH:4]=[CH:5][CH:6]=[N:7]2.[CH3:28][Mg]Br>O1CCCC1>[Cl:1][C:2]1[CH:11]=[C:10]([C:12](=[O:13])[CH3:28])[C:9]([N:18]2[CH2:19][CH2:20][N:21]([CH2:24][CH2:25][O:26][CH3:27])[CH2:22][CH2:23]2)=[C:8]2[C:3]=1[CH:4]=[CH:5][CH:6]=[N:7]2参加物
4
実験手順
To a mixture of 5-chloro-N-methoxy-8-[4-(2-methoxyethyl)piperazin-1-yl]-N-methylquinoline-7-carboxamide (63 mg, 0.16 mmol) in tetrahydrofuran (0.2 mL) was added 1.40 M methylmagnesium bromide in tetrahydrofuran (0.69 mL, 0.96 mmol). The reaction was stirred at room temperature overnight, quenched with saturated ammonium chloride, and extracted with ethyl acetate. The combined organic layers were washed with brine, dried over magnesium sulfate, and then concentrated to dryness under reduced pressure. The resultant residue was purified on silica gel, eluting with 0 to 10% MeOH in dichloromethane, to give the desired product (22 mg, 39%). LCMS calculated for C18H23ClN3O2(M+H)+: m/z=348.1; found: 348.1.