tert-butyl 6-[2-(phenylsulfinyl)ethyl]-1,4,5,6-tetrahydroazepino[4,5-b]indole-3(2H)-carboxylate → 6-[2-(Phenylsulfinyl)ethyl]-1,2,3,4,5,6-hexahydroazepino[4,5-b]indole
反応式
[C:1]1([S:7]([CH2:9][CH2:10][N:11]2[C:19]3[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=3[C:13]3[CH2:20][CH2:21][N:22](C(OC(C)(C)C)=O)[CH2:23][CH2:24][C:12]2=3)=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1>FC(F)(F)C(O)=O>[C:1]1([S:7]([CH2:9][CH2:10][N:11]2[C:19]3[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=3[C:13]3[CH2:20][CH2:21][NH:22][CH2:23][CH2:24][C:12]2=3)=[O:8])[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1参加物
3
実験手順
tert-Butyl 6-[2-(phenylsulfinyl)ethyl]-1,4,5,6-tetrahydroazepino[4,5-b]indole-3(2H)-carboxylate was dissolved in trifluoroacetic acid and stirred for 5 min. The reaction mixture was concentrated to dryness, and the residue was dissolved in 10% aqueous acetic acid. This aqueous solution was extracted with CH2Cl2 (3×). The aqueous layer was adjusted to pH 10 with NaOH, then extracted with EtOAc (3×). The combined EtOAc extracts was dried over MgSO4, filtered, and concentrated. The product was chromatographed (SiO2, 10% methanol in CH2Cl2) to give 6-[2-(phenylsulfinyl)ethyl]-1,2,3,4,5,6-hexahydroazepino[4,5-b]indole (0.116 g) in 70% yield as a white solid. 1H NMR (300 MHz, CD3OD) δ 3.09-3.24, 3.28-3.44, 4.40, 4.62, 7.05, 7.13, 7.25, 7.43, 7.50-7.59; 13C NMR (75 MHz, CD3OD) δ 22.79, 24.84, 37.04, 46.77, 48.66, 56.93, 110.42, 112.81, 116.30, 118.82, 120.17, 120.93, 122.91, 125.18, 128.93, 130.72, 132.72, 136.17, 136.92, 143.37.