[Br:1][C:2]1[S:3][C:4]([C:7]([OH:9])=O)=[CH:5][N:6]=1.[N:10]1([CH2:15][CH2:16][CH2:17][NH2:18])[CH:14]=[CH:13][N:12]=[CH:11]1.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1.CCN(C(C)C)C(C)C>ClCCl>[N:10]1([CH2:15][CH2:16][CH2:17][NH:18][C:7]([C:4]2[S:3][C:2]([Br:1])=[N:6][CH:5]=2)=[O:9])[CH:14]=[CH:13][N:12]=[CH:11]12-Bromothiazole-5-carboxylic acid (0.4 g, 1.923 mmol), 3-(1H-imidazole-1-yl)propan-1-amine (0.265 g, 2.115 mmol), and benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (BOP) (0.935 g, 2.115 mmol) were mixed in dichloromethane (7 ml), treated with Hunig's base (0.705 ml, 4.04 mmol) and stirred at 25° C. for 2 hours. The reaction mixture was diluted with dichloromethane and washed with water and brine. The organic layer was dried (MgSO4), filtered and concentrated. Purification by flash chromatography (silica gel, 2-20% methanol/dichloromethane) afforded the title compound.
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