| Compound | Position | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 1’ | 2’ | 3’ | 4’ | 5’ | 6’ |
| Macrophylloflavone (1) | δH (ppm) (a) | 5.75 (1H, d, J = 11.90 Hz) | 4.83 (1H, d, J = 11.95 Hz) | — | — | 5.96 (1H, d, J = 2.15 Hz) | — | 5.98 (1H, d, J = 2.15 Hz) | — | — | — | 7.07 (1H, d, J = 8.30 Hz) | 6.64 (1H, d, J = 8.05 Hz) | — | 6.43 (1H, d, J = 8.10 Hz) | 7.10 (1H, d, J = 8.25 Hz) | Morelloflavone (2) [37] | δH (ppm) (b) | 4.05 (1H, d, J = 12.00 Hz) | 4.95 (1H, d, J = 12.00 Hz) | — | — | 4.05 (1H, d) | — | 4.05 (1H, d) | — | — | — | 4.05 (1H, d) | 4.05 (1H, d) | — | 4.05 (1H, d) | 4.05 (1H, d) | Morelloflavone (2) [38] | δH (ppm) (c) | 5.87 (1H, d, J = 12.00 Hz) | 5.07 (1H, d, J = 12.00 Hz) | — | — | 6.10 (1H, d, J = 2.00 Hz) | — | 6.38 (1H, d, J = 2.00 Hz) | — | — | — | 7.30 (1H, d, J = 8.00 Hz) | 6.63 (1H, d, J = 8.00 Hz) | — | 6.63 (1H, d, J = 8.00 Hz) | 7.30 (1H, d, J = 8.00 Hz) | Morelloflavone (2) [39] | δH (ppm) (d) | 5.73 (1H, d, J = 12.00 Hz) | 4.86 (1H, d, J = 12.00 Hz) | — | — | 5.97 (1H, s) | — | 5.97 (1H, s) | — | — | — | 7.08 (1H, d, J = 9.00 Hz) | 6.50 (1H, d, J = 9.00 Hz) | — | 6.50 (1H, d, J = 9.00 Hz) | 7.08 (1H, d, J = 9.00 Hz) | Morelloflavone (2) [40] | δH (ppm) (e) | 5.64 (1H, d, J = 12.00 Hz) | 4.83 (1H, d, J = 12.00 Hz) | — | — | 5.95 (1H, s) | — | 5.95 (1H, s) | — | — | — | 7.09 (1H, d, J = 8.00 Hz) | 6.50 (1H, d, J = 8.00 Hz) | — | 6.50 (1H, d, J = 8.00 Hz) | 7.09 (1H, d, J = 8.00 Hz) | Morelloflavone (2) [41] | δH (ppm) (f) | 5.72 (1H, d, J = 12.00 Hz) | 4.86 (1H, d, J = 12.00 Hz) | — | — | 5.91 (1H, s) | — | 5.91 (1H, s) | — | — | — | 7.08 (1H, d, J = 8.00 Hz) | 6.32 (1H, d, J = 8.00 Hz) | — | 6.32 (1H, d, J = 8.00 Hz) | 7.08 (1H, d, J = 8.00 Hz) | Morelloflavone (2) [42] | δH (ppm) (g) | 5.88 (1H, d, J = 12.40 Hz) | 5.00 (1H, d, J = 12.40 Hz) | — | — | 6.04 (1H, br, s) | — | 6.04 (1H, br, s) | — | — | — | 7.25 (1H, d, J = 8.00 Hz) | 6.54 (1H, d, J = 8.00 Hz) | — | 6.54 (1H, d, J = 8.00 Hz) | 7.25 (1H, d, J = 8.00 Hz) | Morelloflavone-4‴-O-β-D-glucoside (3) [30] | δH (ppm) (h) | 5.89 (1H, d, J = 12.61 Hz) | 4.93 (1H, d, J = 12.61 Hz) | — | — | 5.94 (1H, d, J = 4.60 Hz) | — | 6.53 (1H, d, J = 5.00 Hz) | — | — | — | 6.63 (1H, dd, J = 7.60 Hz) | 7.15 (1H, dd, J = 7.97 Hz) | — | 7.15 (1H, dd, J = 7.97 Hz) | 6.63 (1H, dd, J = 7.60 Hz) | Volkensiflavone (4) [43] | δH (ppm) (i) | 4.30 (1H, d, J = 14.00 Hz) | 5.10 (1H, d, J = 14.00 Hz) | — | — | 3.9 (1H, s) | — | 4.00 (1H, s) | — | — | — | 2.90 (1H, d) | 3.40 (1H, d) | — | 3.40 (1H, d) | 2.90 (1H, d) |
| Compound | Position | 2″ | 3″ | 4″ | 5″ | 6″ | 7″ | 8″ | 9″ | 10″ | 1‴ | 2‴ | 3‴ | 4‴ | 5‴ | 6‴ |
| Macrophylloflavone (1) | δH (ppm) (a) | — | 6.39 (1H, s) | — | — | — | — | 6.25 (1H, s) | — | — | — | 7.33 (1H, m) | — | — | 6.91 (1H, d, J = 8.35 Hz) | 7.29 (1H, d, J = 8.40 Hz) | Morelloflavone (2) [37] | δH (ppm) (b) | — | 3.90 (1H, s) | — | — | 4.05 (1H, s) | — | — | — | — | — | 4.95 (1H, d) | — | — | 4.95 (1H, d) | 4.95 (1H, d) | Morelloflavone (2) [38] | δH (ppm) (c) | — | 6.55 (1H, s) | — | — | 6.08 (1H, s) | — | — | — | — | — | 7.52 (1H, m) | — | — | 6.68 (1H, d, J = 8.00 Hz) | 7.52 (1H, m) | Morelloflavone (2) [39] | δH (ppm) (d) | — | 6.43 (1H, s) | — | — | 6.20 (1H, s) | — | — | — | — | — | 7.72 (1H, d, J = 2.00 Hz) | — | — | 6.80 (1H, d, J = 9.00 Hz) | 7.19 (1H, dd, J = 9.00, 2.00 Hz) | Morelloflavone (2) [40] | δH (ppm) (e) | — | 6.44 (1H, s) | — | — | 6.19 (1H, s) | — | — | — | — | — | 7.37 (1H, m) | — | — | 6.84 (1H, d, J = 8.00 Hz) | 7.37 (1H, m) | Morelloflavone (2) [41] | δH (ppm) (f) | — | 6.53 (1H, s) | — | — | 6.17 (1H, s) | — | — | — | — | — | 7.31 (1H, br, s) | — | — | 7.20 (1H, br) | 6.80 (1H, br) | Morelloflavone (2) [42] | δH (ppm) (g) | — | 6.48 (1H, s) | — | — | 6.32 (1H, s) | — | — | — | — | — | 7.52 (1H, br, s) | — | — | 7.03 (1H, d, J = 8.00 Hz) | 7.54 (1H, br, d, J = 8.00 Hz) | Morelloflavone-4‴-O-β-D-glucoside (3) [30] | δH (ppm) (h) | — | 6.76 (1H, s) | — | — | 6.59 (1H, s) | — | — | — | — | — | 7.32 (1H, s) | — | — | 6.97 (1H, d, J = 8.10 Hz) | 7.49 (1H, dd, J = 8.10 Hz) | Volkensiflavone (4) [43] | δH (ppm) (i) | — | 3.45 (1H, s) | — | — | 3.70 (1H, s) | — | — | — | — | — | 2.40 (1H, d) | 3.20 (1H, d) | — | 3.20 (1H, d) | 2.40 (1H, d) |
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