Trifluoroacetic acid → HCID 71279591、化合物
反応式
[C:1]([NH:5][C:6]([C:8]1[C:16]2[C:11](=[N:12][CH:13]=[C:14]([C:17]3[C:25]4[C:20](=[CH:21][CH:22]=[C:23]([O:26][CH:27]([F:29])[F:28])[CH:24]=4)[N:19]([CH2:30][CH2:31][C:32]([N:34]([CH3:36])[CH3:35])=[O:33])[N:18]=3)[N:15]=2)[N:10](COCC[Si](C)(C)C)[CH:9]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].FC(F)(F)C(O)=O>ClCCl>[C:1]([NH:5][C:6]([C:8]1[C:16]2[C:11](=[N:12][CH:13]=[C:14]([C:17]3[C:25]4[C:20](=[CH:21][CH:22]=[C:23]([O:26][CH:27]([F:28])[F:29])[CH:24]=4)[N:19]([CH2:30][CH2:31][C:32](=[O:33])[N:34]([CH3:36])[CH3:35])[N:18]=3)[N:15]=2)[NH:10][CH:9]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]参加物
4
実験手順
To a stirred solution of N-tert-butyl-2-(5-(difluoromethoxy)-1-(3-(dimethylamino)-3-oxopropyl)-1H-indazol-3-yl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide (70 mg, 111 μmol) in dichloromethane (4 mL) was added trifluoroacetic acid (1 mL). After 15 h, the mixture was concentrated in vacuo then 25 mL Jan. 10, 1960 mixture of ammonium hydroxide/methanol/dichloromethane added. After 1 h the mixture was concentrated in vacuo. Purification by chromatography (silica, 24 g Analogix column, 0-5% methanol containing 10% ammonium hydroxide in dichloromethane) gave 2-[5-difluoromethoxy-1-(2-dimethylcarbamoyl-ethyl)-1H-indazol-3-yl]-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid tert-butylamide