mp=161-163 oC; 1H NMR (400 MHz, CDCl3) δ 7.61 – 7.57 (m, 1H), 7.46 (d, J = 7.8 Hz, 2H), 7.41 – 7.38 (dd, J = 13.8, 7.7 Hz, 3H), 6.92 (s, 1H), 6.75 (d, J = 8.2 Hz, 1H), 3.89 (d, J = 14.8 Hz, 1H), 3.68 (d, J = 14.7 Hz, 1H), 3.21 (s, 3H), 1.36 (s, 3H); 13C NMR (100 MHz, CDCl3) δ: 25.1, 26.6, 45.6, 61.6, 109.8, 115.0, 127.0, 127.4, 128.8, 131.3, 131.4, 133.6, 139.5, 142.4, 177.0; HRMS (EI) m/z calcd for C17H16BrNO3S [M+]: 393.0034; found, 393.0031.