“…), 1.95-2.01 (m, 1H, H-7ex), 2.04-2.12 (m, 1H, H-6ex), 2.38 (dm, J 5-6ex = 7.9, 1H, H-5), 4.17-4.19 (m, 1H, H-4), 4.34 and 4.41 (2 × d, 2H, J gem = 11.1, BzOCH 2 −), 5.46 (bs, 1H, H-8), 5.64 (ddd, J 3-5 = 1.5, J 3-4 = 4.1, J 3-2 = 9.4, 1H, H-3), 5.96 (d, J 2-3 = 9.4, 1H, H-2), 7.45-7.52 (m, 4H, Ph-m1, Ph-m2), 7.61-7.66 (m, 2H, Ph-p1, Ph-p2), 7.87-7.89 (m, 2H, Ph-o2), 7.95-7.97 (m, 2H, Ph-o1) 13. C NMR (125.7 MHz, d6-DMSO): δ −4.30 and −4.55 (2 × CH 3 ), 17.99 (C (CH 3 ) 3 ), 22.92 (C-6), 25.91 (tBu), 31.41 (C-7), 47.00 (C-5), 49.19 (C-1), 65.46 (BzOCH 2 −), 73.87 (C-4), 77.11 (C-8), 127.98 (C-3), 128.87 and 128.96 (C-m1, C-m2), 129.27 (C-o2), 129.44 (C-o1), 129.81 and 130.02 (C-i1 and C-i2), 133.54 (C-p1, C-p2), 135.02 (C-2), 164.93 (COO-1), 165.70 (COO-2).…”