“…NMR (Me2SO-d6) 9.6 (d, 1, H-6, J66 = 8 Hz), 8.7 (m, 2, H-3, H-4), 8.3 (m, 3, o-H, H-5), 7.3 (m, 2, m-H), 4.3 (q, 2, OCH2CH3, J = 7 Hz), 1.5 (t, 3, OCH2CH3, J=1 Hz); 13C NMR (Me2SO-d6) 164.84 (St, C-2), 164.29 (Stt, p-C), 152.86 (Sdd, C-8a), 144.21 (Dd, C-7), 133.28 (Dt, C-5), 130.82 (Dd, o-C), 122.98 (D, C-6), 116.24 (Dd, m-C), 111.78 (St, Cs), 111.37 (Dd, C-8), 64.27 (Tq, CH2), 14.39 (Qt, CH3).…”