“…275-278℃ (Lit. 282-284℃ (Yale, 1971)); ν max (ATR) 529, 670, 828, 1,487, 1,512, 1,610, 1,642, 3,300, 3,336 cm −1 ; 1 H-NMR (DMSOd 6 ) 7.40 (1H, d, J = 9.0 Hz, H-8), 7.11-7.50 (3H, m, Ph), 7.70 (1H, dd, J = 2.5 and 9.0 Hz, H-7), 8.01 (2H, dd, J = 1.5 and 8.5 Hz, Ph), 8.06 (1H, d, J = 2.5 Hz, H-5), 9.43 (1H, s, NH), 9.84 (1H, s, NH); 13 C-NMR (DMSOd 6 ) 112. 9, 121.1, 127.8, 128.3, 130.4, 131.1, 132.3, 133.8, 134.5, 136.4, 145.1, 165.6 1, 128.4, 130.4, 135.7, 136.3, 136.5, 144.9, 165.5 2.3 | Inhibition of α-glucosidase and αamylase activity of 2a-j 2.3.1 | α-Glucosidase inhibitory activity assay of compounds 2a-j…”