Table 3.
NMR data for compound 3.
| Position | δH a (J in Hz) | δC b, Type | HMBC | COSY | NOESY |
|---|---|---|---|---|---|
| 1 | 150.2, qC | ||||
| 2 | 5.89, br d (5.0) | 119.6, CH | 4, 14, 15 | 3 | 3, 15, 16, 18 |
| 3 | 5.99, br d (5.0) | 122.3, CH | 1, 5, 18 | 2, 18 | 2, 5a |
| 4 | 137.1, qC | ||||
| 5 | 2.16, m | 39.6, CH2 | 3, 4, 6, 7 | 6a, 6b | 3, 7, 6b, 18 |
| 6a | 1.42, m | 26.5, CH2 | 8 | 5a, 5b, 6b | 5b, 19 |
| 6b | 1.69, m | 4, 5, 7 | 5a, 5b, 6a | ||
| 7 | 3.40, d (7.6) | 85.1, CH | 5, 6, 8, 9, 11, 19 | 5a, 9a | |
| 8 | 80.7, qC | ||||
| 9a | 1.73, m | 35.4, CH2 | 9b, 10a, 10b | 7, 9b, 11 | |
| 9b | 2.83, dt (12.4, 4.0) | 19 | 9a, 10a, 10b | 9a, 10b, 19 | |
| 10a | 1.56, m | 23.0, CH2 | 10b | 10b, 11 | |
| 10b | 1.39, m | 10a | 10b, 20 | ||
| 11 | 3.32, dd (11.2, 2.0) | 80.1, CH | 7, 12, 20 | 10a, 10b | 9a, 10a, 14a |
| 12 | 73.0, qC | ||||
| 13a | 1.46, m | 41.0, CH2 | 20 | 13b, 14a | |
| 13b | 1.80, m | 12, 20 | 13a | 17, 20 | |
| 14a | 2.22, m | 24.0, CH2 | 1, 2 | 13a, 13b, 14b | 3, 11 |
| 14b | 1.77, m | 13 | 14a | ||
| 15 | 2.28, m | 35.2, CH | 16, 17 | 16, 17 | 2, 16, 17 |
| 16 | 1.08, d (7.2) | 22.0, CH3 | 1, 15, 17 | 15 | 2, 15 |
| 17 | 1.10, d (6.4) | 22.6, CH3 | 1, 15, 16 | 15 | 2, 13b, 15 |
| 18 | 1.64, s | 17.2, CH3 | 3, 4, 5 | 3 | 2, 5b |
| 19 | 1.50, s | 17.1, CH3 | 7, 8, 9 | 6b, 9b | |
| 20 | 1.01, s | 23.8, CH3 | 11, 12, 13 | 10b, 13b | |
| OAc | 1.67, s | 169.2, qC | |||
| 21.9, CH3 |
a Spectra were measured in C6D6 (400 MHz); b Spectra were measured in C6D6 (100 MHz).