[N+:1]([C:4]1[CH:5]=[N:6][C:7]2[C:12]([C:13]=1[NH:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][C:20]([C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)=[O:21])=[CH:11][CH:10]=[CH:9][CH:8]=2)([O-])=O>[Pt].C1(C)C=CC=CC=1>[NH2:1][C:4]1[CH:5]=[N:6][C:7]2[C:12]([C:13]=1[NH:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][C:20]([C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)=[O:21])=[CH:11][CH:10]=[CH:9][CH:8]=2A mixture of 6-(3-nitroquinolin-4-ylamino)-1-phenylhexan-1-one (2.27 g, 6.25 mmol) and 5% platinum on carbon catalyst (0.50 g) in toluene (60 mL) was hydrogenated on a Parr shaker at 50 psi (3.4×105 Pa) for 3 hours. After filtration through CELITE filter agent and concentration under reduced pressure, 6-(3-aminoquinolin-4-ylamino)-1-phenylhexan-1-one (2.09 g) was obtained as a dark yellow oil that was used directly in the next step without further purification.
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