Table 1.
Position | 1 | 2 | ||
---|---|---|---|---|
δ H | δc | δ H | δc | |
1 | – | 162.1 | – | 150.2 |
2 | 6.86 (2H, d, J = 8.8 Hz) | 116.3 | – | 148.1 |
3 | 7.83 (2H, d, J = 8.8 Hz) | 132.0 | 7.45 (1H, d, J = 2.0 Hz) | 118.3 |
4 | – | 116.1 | – | 132.4 |
5 | 7.83 (2H, d, J = 8.8 Hz) | 132.0 | 7.38 (1H, dd, J = 8.4, 2.0 Hz) | 122.5 |
6 | 6.86 (2H, d, J = 8.8 Hz) | 116.3 | 6.96 (1H, d, J = 8.4 Hz) | 116.5 |
7 | – | 175.4 | – | 174.4 |
1′ | – | 133.5 | – | 134.0 |
2′ | 7.24 (2H, d, J = 8.4 Hz) | 129.2 | 7.02 (1H, d, J = 2.0 Hz) | 111.4 |
3′ | 6.72 (2H, d, J = 8.4 Hz) | 115.9 | – | 148.9 |
4′ | – | 157.9 | – | 147.2 |
5′ | 6.72 (2H, d, J = 8.4 Hz) | 115.9 | 6.74 (1H, d, J = 8.4 Hz) | 115.9 |
6′ | 7.24 (2H, d, J = 8.4 Hz) | 129.2 | 6.84 (1H, dd, J = 8.4, 2.0 Hz) | 120.6 |
7′ | 4.85 (1H, d, J = 5.6 Hz) | 73.8 | 4.93 (1H, d, J = 5.2 Hz) | 73.8 |
8′ | 4.48 (1H, m) | 84.1 | 4.33 (1H, m) | 86.3 |
9′ | 3.81 (1H, dd, J = 12.0, 4.0 Hz) 3.86 (1H, dd, J = 12.0, 5.6 Hz) |
62.0 | 3.55 (1H, dd, J = 12.0, 5.2 Hz) 3.78 (1H, dd, J = 12.0, 4.4 Hz) |
61.7 |
OCH3-3′ | – | – | 3.81 (3H, s) | 56.3 |
1H- and 13C-NMR data (δ in ppm) were measured in CD3OD at 400 and 100 MHz. “s”, “d”, “m”, and “dd” were for the singlet, doublet, multiplet, and doublet of doublet signals, respectively.