[Br:1][C:2]1[CH:3]=[C:4]([S:15][C:16]2[CH:17]=[C:18]([CH:22]=[CH:23][CH:24]=2)[C:19](O)=[O:20])[C:5]([NH:8][C:9]2[S:10][CH:11]=[C:12]([CH3:14])[N:13]=2)=[N:6][CH:7]=1.Cl.C[N:27](C)CCCN=C=NCC.[NH4+].[Cl-].C1C=CC2N(O)N=NC=2C=1.O.C(N(CC)CC)C>CN(C=O)C.O>[Br:1][C:2]1[CH:3]=[C:4]([S:15][C:16]2[CH:17]=[C:18]([CH:22]=[CH:23][CH:24]=2)[C:19]([NH2:27])=[O:20])[C:5]([NH:8][C:9]2[S:10][CH:11]=[C:12]([CH3:14])[N:13]=2)=[N:6][CH:7]=13-(5-bromo-2-(4-methylthiazol-2-ylamino)pyridin-3-ylthio)benzoic acid (0.35 g, 0.83 mmol) was dissolved in DMF (5 mL). 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.24 g, 1.2 mmol), NH4Cl (0.133 g, 2.5 mmol) and HOBT-H2O (0.19 g, 1.2 mmol) were added. Triethylamine (0.29 mL, 2.1 mmol) was added last. The reaction stirred at room temperature overnight. The material was diluted with water and the solid was filtered to give the title compound (0.23 g, 67% yield). 1H NMR (DMSO-d6) δ 2.17 (s, 3H), 6.40 (bs, 1H), 7.48 (s, 1H), 7.53-7.56 (m, 2H), 7.90-7.96 (m, 2H), 8.08 (s, 1H), 8.27 (bs, 1H).
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