“…(APCI +ve mode): m/z 460 19,. [M+2] + 1 H NMR: δ 2.28-2.40 (5H, 2.28 (s), 2.34 (ddd, J = 15.0, 3.8, 2.0 Hz)), 2.72 (2H, ddd, J = 11.4, 3.8, 2.0 Hz), 3.08 (2H, dd, J = 13.9, 4.3 Hz), 3.85-3.87 (6H, 3.86 (s), 3.86 (s)), 5.98 (1H, dd, J = 4.3, 2.2 Hz), 6.12 (1H, s), 6.73 (1H, d, J = 15.7 Hz), 7.29-7.39 (2H, 7.35 (ddd, J = 8.1, 1.9, 1.…”