“…1H NMR (270 MHz, CDCl 3 ): δ = 2.49 (s, 3H, CH 3 ), 3.83 (s, 3H, OCH 3 ), 3.89 (s, 2H, CH 2 ), 6.86 (dd, 1H, H3′, J 1 = 1. 24 15.5, 35.5, 55.9, 110.2, 119.9, 120.2, 120.5, 121.3, 124.5, 124.8, 125.1, 125.3, 126.9, 127.3, 129.1, 141.9, 142.4, 147.9, 152.6, 165.7, 168.4 ,57.95;H,3.98;N,9.22;found: C,58.01;H,4.03;N, 15.5,35.1,55.4,105.9,110.7,112.2,120.9,124.9,125.3,127.6,128.9,129.7,129.8,137.4,138.6,146.5,147.4,148.9,152.7,153.3,160.3,166.5. Anal.…”