NMR:
1H NMR (400 MHz, CDCl3, rotameric ratio E:Z 7:3) δ¼7.53–7.47 (m, 2 H), 7.15 (t, 3 J¼6.9 Hz, 1 H), 7.07 (t, 3 J¼7.5 Hz, 1 H), 6.99 (d, 3 J¼7.4 Hz, 1 H), 6.88 (d, 3 J¼5.2 Hz, 1 H), 6.85 (d, 3 J¼5.1 Hz, 1 H), 6.79 (d, 3 J¼7.7 Hz, 1 H), 6.56 (s, 1 H), 5.96 (s, 1 H), 4.96–4.87 (m, 1 H), 4.21 (d, 2 J¼16.3 Hz, 1 H), 4.09–3.95 (m, 1 H), 3.83 (dd, 2 J¼16.3, 3 J¼4.0 Hz, 1 H), 3.60 (qd, 2 J¼16.3, 3 J¼15.9, 5.3 Hz, 1 H), 3.06–2.83 (m, 4 H), 2.70–2.39 (m, 8 H), 1.70–1.39 (m, 3 H), 1.17 (dddd, 2 J¼23.2, 3 J¼20.5, 15.5, 7.6 Hz, 2 H), 0.97–0.85 (m, 10 H);
13C NMR (101 MHz, CDCl3) δ¼170.22, 169.70, 159.07, 158.88, 158.60, 137.06, 136.77, 135.78, 134.25, 133.06, 132.13, 126.73, 126.35, 123.72, 123.00, 122.67, 122.07, 119.00, 118.53, 58.90, 56.69, 56.43, 56.19, 51.41, 50.97, 40.85, 37.04, 35.07, 34.55, 31.09, 27.48, 27.39, 25.78, 25.00, 24.82, 24.64, 17.75, 17.60, 11.35, 11.29
