Table 1.
1H- and 13C-NMR data of 1 (in methanol-d4).
| Position | δH (J in Hz) | δC | Position | δH (J in Hz) | δC | |
|---|---|---|---|---|---|---|
| 1 | ─ | 138.13 | 3′ | 3.446 b | 77.59 | |
| 2 | 6.574 br s | 117.13 | 4′ | 3.357 m | 72.07 | |
| 3 | ─ | 148.38 | 5′ | 3.641 m | 75.83 | |
| 4 | ─ | 144.99 | 6′a | 4.575 br d (11.6) | 64.83 | |
| 5 | 6.933 d (8.4) | 118.89 | 6′b | 4.275 dd (11.6, 7.6) | ||
| 6 | 6.284 dd (8.4, 1.6) | 120.34 | 1″ | ─ | 120.95 | |
| 7 | 2.617 br s a | 30.20 | 2″ | 7.753 d (8.8) | 133.03 | |
| 8 | 2.617 br s a | 45.81 | 3″ | 6.648 d (8.8) | 116.82 | |
| 9 | ─ | 211.13 | 4″ | ─ | 165.63 | |
| 10 | 2.023 s | 30.00 | 5″ | 6.648 d (8.8) | 116.82 | |
| 1′ | 4.625 d (5.2) | 104.30 | 6″ | 7.753 d (8.8) | 133.03 | |
| 2′ | 3.446 b | 74.88 | 7″ | ─ | 168.14 |
a, b signals were overlapped.