Table 3.
1H and 13C NMR data (DMSO-d6, 600 and 150 MHz) of 2
| Position | δH, mult (J in Hz) | δC, type | COSY | HMBC |
|---|---|---|---|---|
| 1 | 7.95, d (7.8) | 120.6, CH | H-2 | C-3, 4a, 10 |
| 2 | 7.85, dd (7.8, 8.4) | 135.5, CH | H-1, 3 | C-4, 10a |
| 3 | 7.70, d (8.4) | 123.8, CH | H-2 | C-1, 4a |
| 4 | – | 156.7, C | – | – |
| 4a | – | 122.1, C | – | – |
| 5 | – | 180.8, C | – | – |
| 5a | – | 133.35, C | – | – |
| 6 | 7.61, d (7.8) | 118.3, CH | H-7 | C-8, 9a, 5 |
| 7 | 7.79, d (7.8) | 140.3, CH | H-6 | C5a, 9, 11 |
| 8 | – | 133.2, C | – | – |
| 9 | – | 160.3, C | – | – |
| 9a | – | 115.1, C | – | – |
| 10 | – | 189.0, C | – | – |
| 10a | – | 135.3, C | – | – |
| 11a 11b |
2.88, d (13.2) 3.03, d (13.2) |
39.9, CH | – | C-7, 9, 13, 15 |
| 12 | – | 71.4, C | – | – |
| 13 | 2.39, s | 46.6, CH2 | – | C-11, 15 |
| 14 | – | 173.2, C | – | – |
| 15 | 1.18, s | 26.5, CH3 | – | C-11, 13 |
| 16 | 3.54, s | 40.9, CH2 | – | C-14, 1″, 2″, 6″ |
| 1′ | 5.64, d (1.8) | 99.0, CH | H-2′ | C-4, 5″ |
| 2′ | 3.99, m | 70.4, CH | H-1′ | C-1″ |
| 3′ | 3.99, m | 70.5, CH | H-4′ | – |
| 4′ | 3.33, m | 72.0, CH | H-3′ | – |
| 5′ | 3.52 m | 70.6, CH | H-4′, 6′ | – |
| 6′ | 1.08, d (6) | 18.2, CH3 | H-5′ | C-5″, 4″ |
| 1″ | – | 135.5, C | – | – |
| 2″, 6″ | 7.25, m | 129.7, CH | H-3″, 5″ | – |
| 3″, 5″ | 7.30, m | 128.7, CH | H-2″, 6″ | – |
| 4″ | 7.24 m | 127.0, CH | – | – |
| 14-NH | 8.17 br s | – | – | – |