N-bromobutanimide → ethyl 2-(8-(benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)-5-bromothiazole-4-carboxylate
反応式
[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[NH:10][C:11]([C:13]1[CH:14]=[CH:15][CH:16]=[C:17]2[C:22]=1[CH2:21][N:20]([C:23]1[S:24][CH:25]=[C:26]([C:28]([O:30][CH2:31][CH3:32])=[O:29])[N:27]=1)[CH2:19][CH2:18]2)=[O:12].C1C(=O)N([Br:40])C(=O)C1>C(#N)C>[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[NH:10][C:11]([C:13]1[CH:14]=[CH:15][CH:16]=[C:17]2[C:22]=1[CH2:21][N:20]([C:23]1[S:24][C:25]([Br:40])=[C:26]([C:28]([O:30][CH2:31][CH3:32])=[O:29])[N:27]=1)[CH2:19][CH2:18]2)=[O:12]参加物
4
実験手順
To compound 34A in acetonitrile was added 1.05 eq of NBS. The reaction mixture was stirred at rt for 2 hours. The solvent was removed, and the residue was purified by column chromatography on silica gel eluting with 3:2 hexanes/EtOAc to provide the desired product: MS (ESI(+)): 544 (M+H).