tert-Butyl 4-({[(2'-oxospiro[cyclopentane-1,3'-indol]-1'(2'H)-yl)carbonyl]amino}methyl)piperidine-1-carboxylate → 2'-Oxo-N-(piperidin-4-ylmethyl)spiro[cyclopentane-1,3'-indole]-1'(2'H)-carboxamide
反応式
[O:1]=[C:2]1[C:10]2([CH2:14][CH2:13][CH2:12][CH2:11]2)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]1[C:15]([NH:17][CH2:18][CH:19]1[CH2:24][CH2:23][N:22](C(OC(C)(C)C)=O)[CH2:21][CH2:20]1)=[O:16]>Cl.CO>[O:1]=[C:2]1[C:10]2([CH2:14][CH2:13][CH2:12][CH2:11]2)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]1[C:15]([NH:17][CH2:18][CH:19]1[CH2:20][CH2:21][NH:22][CH2:23][CH2:24]1)=[O:16]参加物
4
実験手順
tert-Butyl 4-({[(2′-oxospiro[cyclopentane-1,3′-indol]-1′(2′H)-yl)carbonyl]amino}methyl)piperidine-1-carboxylate (750 mg, 1.8 mmol, step 1 of Example 2) was dissolved in 10% HCl in methanol (20 mL) and the mixture was stirred for 7 h at room temperature. Concentrated gave a colorless oil, which was chromatographed on a column of silica gel eluting with CH2Cl2/methanol/NH4OH (12/11/0.1) to give 570 mg (quant.) of the title compound as colorless oil.