Ethyl 3-aminobenzoate → 9-Bromo-5-(m-ethoxycarbonylphenylcarbamoylmethyl)-6,7-dihydro-1H, 5H-pyrido[1,2,3-de]quinoxaline-2,3-dione

関与物質

反応手順

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 (400 mg, 1.18 mmol) and m-ethoxycarbonylaniline (250 μL, 1.5 mmol) to give 510 mg of the title compound (89%): mp>270° C.; 1H NMR (270 MHz, DMSO-d6) δ12.07 (bs, 1H), 10.25 (s, 1H), 8.20 (bs, 1H), 7.85 (d, 1H, J=8.1 Hz), 7.65 (d, 1H, J=8.1 Hz), 7.30 (t, 1H, J=8.1 Hz), 7.24 (d, 1H, J=2Hz), 7.17 (d, 1H, J=2 Hz), 5.16~5.27 (m, 1H), 4.32 (q, 2H, J=7.2 Hz), 3.05 (ddd, 1H, J=17.1, 13.5, 4.5 Hz), 2.83 (dm, 1H, J=17.1 Hz), 2.55~2.68 (m, 2H), 2.12 (dm, 1H, J=13.5 Hz), 1.81~1.97 (m, 1H), 1.33 (t, 3H, J=7.1 Hz).

情報源と証拠