[O:1]=[C:2]1[CH:7]([N:8]2[CH2:13][CH2:12][N:11]([C:14](OC(C)(C)C)=O)[CH2:10][CH2:9]2)[CH2:6][CH2:5][CH2:4][NH:3]1.FC(F)(F)C(O)=O.ClC1[N:34]=[CH:33][N:32]=[C:31]([NH:35][C:36]2[S:37][C:38]([C:41]#[N:42])=[CH:39][N:40]=2)[CH:30]=1.C(N(CC)CC)C>>[O:1]=[C:2]1[CH:7]([N:8]2[CH2:9][CH2:10][N:11]([C:14]3[N:34]=[CH:33][N:32]=[C:31]([NH:35][C:36]4[S:37][C:38]([C:41]#[N:42])=[CH:39][N:40]=4)[CH:30]=3)[CH2:12][CH2:13]2)[CH2:6][CH2:5][CH2:4][NH:3]151-2 (0.15 g, 0.53 mmol) was first treated with neat trifluoroacetic acid for 30 minutes at room temperature. The trifluoroacetic acid was then evaporated off and the residue was dissolved in n-butanol (3 mL). To this was added 35-1 (0.13 g, 0.53 mmol) and triethylamine (0.27 g, 2.65 mmol). This was heated at 150° C. for 18 hours and then the solid was filtered off, washed with n-butanol and then ethyl ether to afford 51-3. Hi-Res MS: calc: 385.1554 found: 385.1551. 1H-NMR (DMSO-d6): 12.02 (s, 1H); 8.41 (s, 1H); 8.25 (s, 1H); 7.44 (s, 1H); 6.20 (s, 1H); 3.51 (br s, 4H); 3.13 (m, 1H); 3.05 (m, 2H); 2.93 (m, 2H); 2.63 (m, 2H); 1.62–1.83 (complex, 4H).
Wird geladen…