反应详情

4-Dimethylamino-but-2-enoic acid hydrochloride salt (66 mg, 0.40 mmol) in N,N-dimethylformamide (1 mL) is treated with Et3N (0.06 mL) at 0° C. To the mixture is then added isobutylchloroformate (0.05 mL). The mixture is then stirred at this temperature for 30 min before addition of 6-Iodo-4-[(4-pyrrolidin-2-yl-phenylamino)-methylene]-4H-isoquinoline-1,3-dione (80 mg, 0.17 mmol) in N,N-dimethylformamide (3 mL) dropwisely and the reaction is allowed to stir at room temperature overnight. After an aqueous workup, the final residue is purified with prep-TLC to afford the title compound (20 mg, 21%). 1H NMR (400 MHz, DMSO) δ12.52 (1H, d, J=12.4 Hz), 11.39-11.41 (1H, m), 8.90-8.94 (1H, m), 8.59 (1H, m), 7.21-7.75 (6H, m), 6.48-6.59 (1.4H, m), 6.01-6.05 (0.6H, m), 5.1-5.24 (1H, m), 3.57-3.91 (2H, m), 3.06-3.07 (1H, m), 2.82-2.84 (1H, m), 2.1-2.39 (2H, m), 2.18 (3H, s), 1.96 (3H, s), 1.77-1.95 (2H, m). MS (ESI): 571.0 (M+1)+1.

1. customAfter an aqueous workup, the final residue is purified with prep-TLC