Table 4.
NMR data for compound 3
| No. | 13C | 1H | HMBC |
|---|---|---|---|
| 1 | 163.7 | – | – |
| 2′ | 131.9 | 8.42, 1H, s | 1, 3′, 3′a, 7′a, 1″ |
| 3′ | 110.0 | – | – |
| 3′a | 126.5 | – | – |
| 4′ | 120.9 | 8.08, 1H, m | 3′, 6′, 7′a |
| 5′ | 120.8 | 7.16, 1H, m, overlapped | 3′a, 7′ |
| 6′ | 122.1 | 7.17, 1H, m, overlapped | 4′, 7′a |
| 7′ | 110.8 | 7.53, 1H, m | 3′a, 5′ |
| 7′a | 136.0 | – | – |
| 1″ | 48.7 | 5.46, 2H, m | 2′, 7′a, 2″, 3″/7″ |
| 2″ | 133.7, d, J = 3.0 Hz | – | – |
| 3″/7″ | 129.3, d, J = 8.2 Hz | 7.34, 2H, m | 1″, 4″/6″, 5″ |
| 4″/6″ | 115.4, d, J = 21.3 Hz | 7.16, 2H, m, overlapped | 2″, 3″/7″, 5″ |
| 5″ | 161.5, d, J = 242.0 Hz | – | – |
| 1‴ | 172.5 | – | – |
| 2‴ | 59.2 | 4.48, 1H, d, J = 9.6 Hz | 1, 1‴, 3‴, 4‴/5‴/6‴ |
| 3‴ | 34.1 | – | – |
| 4‴/5‴/6‴ | 26.9 | 1.02, 9H, s | 2‴, 3‴ |
| 1-CONH | – | 7.25, 1H, d, J = 9.2 Hz | 1, 1‴, 2‴ |
| 1‴-CONH2 | – | 7.56, 1H, brs | 1‴ |
| – | 7.11, 1H, brs | 1‴, 2‴ |
Recorded under the same conditions as specified in Table 2