Table 2.
1H NMR data (600 MHz) and 13C NMR data (150 MHz) of compounds 4–5 (CD3OD).
| Position | 4 | 5 | ||
|---|---|---|---|---|
| δH (J in Hz) | δ C | δH (J in Hz) | δ C | |
| 1 | - | 129.5 | - | 129.4 |
| 2 | 7.16, d (1.8) | 112.3 | 7.24, d (2.4) | 112.3 |
| 3 | - | 151.8 | - | 152.4 |
| 4 | - | 151.7 | - | 151.7 |
| 5 | 6.93, d (8.4) | 117.4 | 7.04, d (8.4) | 117.2 |
| 6 | 7.08, dd (8.4, 1.8) | 123.3 | 7.13, dd (8.4, 2.4) | 123.5 |
| 7 | 7.61, d (16.2) | 146.1 | 7.64, d (16.2) | 146.1 |
| 8 | 6.40, d (16.2) | 116.8 | 6.42, d (16.2) | 116.8 |
| 9 | - | 169.1 | - | 169.1 |
| 1′ | - | 130.6 | - | 130.8 |
| 2′ | 6.98, d (1.8) | 112.5 | 7.00, d (1.8) | 112.1 |
| 3′ | - | 148.9 | - | 149.1 |
| 4′ | - | 147.5 | - | 147.6 |
| 5′ | 6.76, d (7.8) | 115.6 | 6.81, d (7.8) | 116.0 |
| 6′ | 6.84, dd (7.8, 1.8) | 122.3 | 6.85, dd (7.8, 1.8) | 121.6 |
| 7′ | 4.40, d (6.6) | 83.7 | 4.47, d (6.0) | 84.2 |
| 8′ | 4.54, m | 84.7 | 4.50, m | 85.1 |
| 9′ | 3.86, d (4.8) | 62.3 | 3.71, dd (12.0, 4.2) 3.51, q (6.0) | 62.2 |
| 1″ | 4.26, q (7.2) | 61.5 | 4.26, q (7.2) | 61.5 |
| 2″ | 1.35, t (7.2) | 14.6 | 1.35, t (7.2) | 14.6 |
| 3-OCH3 | 3.83, s | 56.5 | 3.92, s | 56.6 |
| 3′-OCH3 | 3.82, s | 56.3 | 3.85, s | 56.3 |
| 7′-OCH3 | 3.26, s | 57.0 | 3.26, s | 57.2 |