TABLE 2.
1H and 13C NMR data of 3 and 4 in methanol-d 4 (δ in ppm, J in Hz).
| No | 3 | 4 | ||
|---|---|---|---|---|
| δ H | δ C | δ H | δ C | |
| 1 | 148.9 s | 156.5 s | ||
| 2 | 123.5 s | 120.3 s | ||
| 3 | 6.46 d (2.9) | 113.3 d | 7.25 d (2.9) | 115.4 d |
| 4 | 151.5 s | 150.6 s | ||
| 5 | 6.61 dd (8.7, 2.9) | 117.2 d | 7.01 dd (8.9, 2.9) | 125.9 d |
| 6 | 6.68 d (8.7) | 117.2 d | 6.79 d (8.9) | 119.7 d |
| 7 | 6.23 d (1.6) | 79.8 d | 205.5 s | |
| 8 | 7.35 d (1.6) | 151.1 d | Ha: 3.43 dd (17.9, 9.6) | 41.4 t |
| Hb: 3.17 dd (17.9, 4.3) | ||||
| 9 | 133.1 s | 2.99 m | 41.0 d | |
| 10 | 176.8 s | 177.7 s | ||
| 11 | 2.35 t (7.7) | 26.2 t | Ha: 1.73 m | 33.1 t |
| Hb: 1.64 m | ||||
| 12 | 2.30 m | 26.9 t | 2.08 overlap | 26.4 t |
| 13 | 5.14 t (7.0) | 124.1 d | 5.13 t (7.6) | 124.5 d |
| 14 | 137.9 s | 137.3 s | ||
| 15 | 1.58 s | 16.1 q | 1.61 s | 16.1 q |
| 16 | 1.96 t (7.1) | 41.1 t | 2.00 t (7.5) | 40.8 t |
| 17 | 1.43 m | 23.6 t | 2.08 overlap | 27.6 t |
| 18 | 1.38 m | 44.3 t | 5.09 t (7.0) | 125.3 d |
| 19 | 71.5 s | 132.2 s | ||
| 20 | 1.15 overlap | 29.2 q | 1.66 s | 25.9 q |
| 21 | 1.15 overlap | 29.2 q | 1.59 s | 17.8 q |
| -OCH3 | 3.68 s | 52.3 q | ||
1H recorded at 600 MHz and 13C NMR recorded at 150 MHz (compound 3).
1H recorded at 500 MHz and 13C NMR recorded at 125 MHz (compound 4).