长沙资材科技有限公司

¹H NMR (400 MHz, CDCl₃) δ: 7.95 (d, J = 8.5 Hz, 2H), 6.93 (d, J = 8.5 Hz, 2H), 4.43 – 4.36 (m, 1H), 3.91 – 3.87 (m, 4H), 3.79 – 3.77 (m, 1H), 3.38 – 3.33 (dd, J = 15.9, 6.0 Hz, 1H), 3.03 – 2.98 (dd, J = 16.0, 6.8 Hz, 1H), 2.21 – 2.15 (dt, J= 19.1, 6.6 Hz, 1H), 1.97 – 1.88 (m, 2H), 1.62 – 1.55 (dd, J = 12.3, 8.0 Hz, 1H). ¹³C NMR (100 MHz, CDCl₃) δ: 25.6, 31.6, 44.3, 55.7, 67.8, 75.6, 114.8, 130.2, 130.5, 163.5, 197.1.