反应详情

Following the procedure of Example 1, 1 -phenyl-2-(2-pyridinyl)ethanedione (800 mg, 3.79 mmol) and 2-guanidinobenzimidazole (560 mg, 3.15 mmol) in methanol (20 mL) was treated with a solution of sodium hydroxide (40 mg, 1.0 mmol) in 1 mL of water. The title compound was isolated as pale yellow crystals (160 mg, 20% yield). 1H NMR (300 z, d6 -DMSO) δ 12.0 (br. s, NH, 1H) 11.5 (br s, NH, 2 H), 10.0 (br s, NH, I H), 8.6 br s, NH, 1 H), 8A1 (m, 2 H), 7.55 (t, J=6.9 Hz, 2 H), 7.30-7.10 (m, 8 H), 6.98 (dd, J=6.0, 3.1 Hz, 4 H); MS (ESI) m/z 526 [M+H+.