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12 Spectroscopic Data: All new compounds were characterised by spectroscopic and analytical data. Compound 1: 1H NMR: δ = 8.23 (2 H, dd, J
o
,
m
= 6.9, 1.9 Hz), 8.00 (2 H, dd, J
o
,
m
= 6.9, 1.9 Hz), 7.32-7.07 (4 H, m), 4.68, 4.19 (2 H, ABq, J = 18.8 Hz), 3.78, 3.52 (2 H, ABq, J = 16.6 Hz), 3.49-3.17 (5 H, m), 2.04-1.85 (4 H, m). 13C NMR: δ = 150.0, 143.5, 130.5, 129.8, 128.8, 128.7, 127.9, 126.9, 124.7, 123.9, 90.5, 87.2, 84.0, 82.4, 59.2, 56.0, 50.2, 45.1, 28.2, 23.9. MS (ES+): m/z = 436 [M + H+]. Compound 2: 1H NMR: δ = 8.31 (2 H, dd, J
o
,
m
= 7.0, 2.0 Hz), 7.98 (2 H, dd, J
o
,
m
= 7.0, 2.0 Hz), 4.62 (2 H, dd, J = 18.6, 6.0 Hz), 4.33 (1 H, m), 4.21 (2 H, dd, J = 18.6,12 Hz), 3.79 (1 H, dd, J = 12.0, 3.4 Hz), 3.44 (1 H, t, J = 2.0 Hz), 2.65-2.37 (2 H, m), 2.27-2.15 (2 H, m). 13C NMR: δ = 174.7, 150.3, 143.4, 130.6, 130.2, 128.9, 128.7, 128.4, 125.9, 124.6, 124.4, 87.2, 86.5, 84.9, 83.7, 54.8, 48.0, 38.0, 32.6, 29.4, 22.1. MS (ES+): m/z = 450 [M+ H+], 263 [M+ - SO2Ar]. Compound 3: δ = 6.43 (1 H, d, J = 10.8 Hz), 5.88-5.79 (2 H, m), 5.28 (1 H, d, J = 15.6 Hz), 4.51-4.42 (2 H, m), 4.12-4.04 (2 H, m), 3.69-3.41 (2 H, m), 2.25-2.14 (1 H, m), 1.97-1.88 (3 H, m). 13C NMR: δ = 121.7, 120.8, 94.7, 93.0, 86.6, 83.4, 67.1, 65.0, 55.5, 54.7, 49.0, 32.0, 30.6, 23.7. MS (ES+): m/z = 170 [M - OH]. Compound 4: 1H NMR (200 MHz, CDCl3): δ = 8.41 (2 H, dd, J = 8.8 Hz), 8.07 (2 H, dd, J = 8.8 Hz), 7.28 (H, m), 4.28 (2 H, s), 3.66 (2 H, s). 1H NMR (200 MHz, DMSO-d
6
): δ = 8.39 (2 H, d), 8.13 (2 H, dd, J = 8.8 Hz), 7.32 (2 H, m), 4.40 (2 H, s), 3.53 (2 H, s). 13C NMR (50 MHz, CDCl3): δ = 150.3, 142.5, 130.7, 128.7, 124.7, 124.6, 85.7, 84.7, 46.3, 40.0. 13C NMR (50 MHz, DMSO-d
6
): δ = 150.29, 142.4, 130.5, 129.2, 129.1, 124.9, 104.5, 86.7, 84.9, 45.7. MS (ES+): m/z = 598 [M+ + H2O], 581 [M + H+], 394 [M+ - SO2Ar].