“…mp 119-121 C;1 H NMR (500 MHz, CDCl 3 ) d (ppm) 7.69 (s, 1H), 7.39 (d, J ¼ 8.5 Hz, 1H), 7.34 (d, J ¼ 8.1 Hz, 1H), 7.31 (d, J ¼ 8.6 Hz, 1H), 7.26 (d, J ¼ 7.7 Hz, 1H), 7.23 (d, J ¼ 6.0 Hz, 1H), 6.98 (d, J ¼ 6.2 Hz, 2H), 6.83 (t, J ¼ 8.4 Hz, 1H), 4.68-4.64 (m, 1H), 4.58(d, J ¼ 4.3 Hz, 2H), 4.20 (t, J ¼ 7.0 Hz, 2H), 4.11 (q, J ¼ 7.1 Hz, 2H), 2.73 (t, J ¼ 7.0 Hz, 2H), 1.63 (d, J ¼ 6.8 Hz, 6H), 1.25 (t, J ¼ 7.2 Hz,3H); ESI-HRMS: calcd for C 30 H 29 ClF 2 -N 5 O 3 [M + H] + , 580.1922, found 580.1916, C 30 H 28 ClF 2 N 5 O 3 Na, [M + Na] + , 602.1741, found 602.1724. 8m was obtained in 80% yield as brown solid.…”