反应详情

A procedure similar to that described in Example 5 was carried out with 9-bromo-5-carboxymethyl-6,7-dihydro-1H, 5H-pyrido[1,2,3-de]quinoxaline-2,3-dione (150 mg, 0.44 mmol) and p-acetylaminoaniline (75 mg, 0.5 mmol) to give 190 mg of the title compound (91%): mp>270° C.; 1H NMR (270 MHz, DMSO-d6) δ12.06 (s, 1H), 9.94 (s, 1H), 9.87 (s, 1H), 7.44~7.52 (m, 4H), 7.23 (bs, 1H), 7.17 (bs, 1H), 5.18~5.26 (m, 1H), 3.07 (ddd, 1H, J=17.1, 13.5, 4.5 Hz), 2.83 (dm, 1H, J=17.1 Hz), 2.55~2.64 (m, 2H), 2.10 (dm, 1H, J=13.5 Hz), 2.02 (s, 3H), 1.80~1.96 (m, 1H).