[CH3:1][N:2]([CH3:29])[CH2:3][CH2:4][NH:5][C:6]1[N:11]=[CH:10][C:9]([C:12]2[NH:20][C:19]3[C:18](=[O:21])[N:17]([CH2:22][CH2:23][CH3:24])[C:16](=[O:25])[N:15]([CH2:26][CH2:27][CH3:28])[C:14]=3[CH:13]=2)=[CH:8][CH:7]=1.[F:30][C:31]1[CH:36]=[CH:35][C:34]([N:37]=[C:38]=[O:39])=[CH:33][CH:32]=1>C1COCC1>[CH3:29][N:2]([CH3:1])[CH2:3][CH2:4][N:5]([C:6]1[CH:7]=[CH:8][C:9]([C:12]2[NH:20][C:19]3[C:18](=[O:21])[N:17]([CH2:22][CH2:23][CH3:24])[C:16](=[O:25])[N:15]([CH2:26][CH2:27][CH3:28])[C:14]=3[CH:13]=2)=[CH:10][N:11]=1)[C:38]([NH:37][C:34]1[CH:35]=[CH:36][C:31]([F:30])=[CH:32][CH:33]=1)=[O:39]9c (35 mg) was suspended in THF (3 ml) in a pressure tube, 4-fluorophenyl isocyanate (130 mg) was added and the mixture was stirred at 85° C. for 3 days. After cooling to room temperature, the mixture was evaporated and the solid was stirred with ether and filtered The mother liquid contained most of the product. After removal of the solvent, the residue was purified by column (14 g silica gel, RT Scientific) (CH2Cl2: MeOH=100:0 to 95:5) to give the product (11c) (22 mg). HPLC condition: MeOH 40%-95% gradient in 10 minutes then MeOH 95%. Retention Time=7.20 min. 1H NMR (DMSO, d6): 0.83-0.93 (m, 6H), 1.53-1.71 (m, 4H), 2.28 (s, 6H), 2.50 (s, 4H), 3.87 (m, 4H), 4.14 (t, 1H, J=5.4 Hz), 6.83 (s, 1H), 7.15 (t, 2H, J=8.7 Hz), 7.52 (m, 3H), 8.24 (dd, 1H, J1=8.7 Hz, J2=2.4 Hz), 8.92 (d, 1H, J=2.4 Hz), 11.54 (s, 1H). MS: m/z 536 (M+H)+.
Wird geladen…