Table 3.
1H and 13C-NMR data (MeOH-d4 + 0.1% TFA, 500/125 MHz) for compounds 38–41.
| Position | 38 | 39 | 40/41 | |||
|---|---|---|---|---|---|---|
| δH (J in Hz) | δC | δH (J in Hz) | δC | δH (J in Hz) | δC | |
| 1 | 137.2 | 128.2 | 134.7 | |||
| 2 | 6.98 br s | 115.3 | 7.35 d (2.1) | 121.5 | 6.87 d (1.8) | 114.1 |
| 3 | 145.6 | 144.1 | 146.5 | |||
| 4 | 145.9 | 152.4 | 146.5 | |||
| 5 | 6.67 d (8.1) | 116.7 | 6.99 d (8.3) | 118.8 | 6.76 d (8.2) | 116.3 |
| 6 | 6.84 dd (8.1, 2.1) | 123.9 | 7.37 dd (8.3, 2.1) | 127.9 | 6.78 dd (8.2, 1.8) | 118.9 |
| 7 | 2.99 dd (15.4, 8.5) 2.96 dd (15.4, 7.6) |
40.1 | 7.59 d (15.9) | 146.4 | 5.71 dd (9.4,8.1) | 86.2 |
| 8 | 4.83 t (8.2) | 39.3 | 6.36 d (15.9) | 115.9 | 3.74 dd (15.9, 9.4) 3.26 dd (15.9, 8.1) |
39.3 |
| 9 | 174.5 | 168.1 | - | - | ||
| 9-OMe | 3.54 s | 52.1 | ||||
| 1′ | 129.4 | 129.2 | 123.8 | |||
| 2′ | 6.52 d (1.9) | 114.8 | 6.73 d (2.1) | 117.6 | 129.8 | |
| 3′ | 146.4 | 146.1 | 148.3 | |||
| 4′ | 142.6 | 145.3 | 145.0 | |||
| 5′ | 132.8 | 6.68 d (8.1) | 116.3 | 6.72 d (8.4) | 117.1 | |
| 6′ | 6.72 br s | 120.0 | 6.60 dd (8.1, 2.1) | 121.8 | 7.06 d (8.4) | 123.0 |
| 7′ | 3.15 dd (14.2, 1.6) 2.98 dd (14.2, 11.4) |
38.8 | 3.08 dd (14.2, 4.3) 2.99 dd (14.2, 8.3) |
37.9 | 7.62 d (16.0) | 145.2 |
| 8′ | 5.23 dd (11.4, 1.6) | 75.3 | 5.18 dd (8.3, 4.3) | 74.7 | 6.25 d (16.0) | 115.9 |
| 9′ | 172.7 | 173.4 | 168.3 | |||
| 1′′ | 126.0 | 112.6 | 129.2 | |||
| 2′′ | 7.40 d (2.1) | 118.0 | 146.8 | 6.74 d (2.1) | 117.6 | |
| 3′ | 146.3 | 6.79 s | 103.5 | 146.2 | ||
| 4′′ | 148.5 | 149.8 | 145.3 | |||
| 5′′ | 6.79 d (8.3) | 116.4 | 144.8 | 6.69 d (8.1) | 116.3 | |
| 6′′ | 7.16 dd (8.3, 2.1) | 124.7 | 6.81 s | 112.4 | 6.60 dd (8.1, 2.1) | 121.8 |
| 7′′ | 7.13 s | 127.0 | 7.03 s | 123.8 | 3.09 dd (14.3, 4.3) 3.00 dd (14.3, 8.4) |
37.9 |
| 8′′ | 140.2 | 140.9 | 5.19 dd (8.4, 4.3) | 74.6 | ||
| 9′′ | 164.2 | 160.2 | 173.4 | |||