Table 2.
NMR data for 2 (600 MHz, acetone-d 6)
| Position | δ H (J in Hz) | δ C, typea | HMBCb |
|---|---|---|---|
| 1 | 166.3, qC | ||
| 2 | 6.13, d (15.8) | 122.4, CH | 1, 3, 4 |
| 3 | 6.97, d (15.8) | 145.8, CH | 1, 2, 4, 8, 9 |
| 4 | 66.8, qC | ||
| 5 | 7.57, br s | 8 | |
| 6 | 156.6, qC | ||
| 7 | |||
| 8 | 173.5, qC | ||
| 9a | 2.53, dd (14.5, 7.3) | 36.1, CH2 | 3, 4, 8, 10, 11 |
| 9b | 2.70, dd (14.5, 7.3) | ||
| 10 | 5.05, t (7.3) | 116.5, CH | 4, 9, 12, 13 |
| 11 | 138.2, qC | ||
| 12 | 1.68, s | 26.0, CH3 | 4, 9, 10, 11, 13 |
| 13 | 1.63, s | 18.2, CH3 | 4, 9, 10, 11, 12 |
| 14 | 2.89, s | 24.6, CH3 | 6, 8 |
| 15 | 3.72, s | 52.0, CH3 | 1, 2 |
aRecorded at 150 MHz
bHMBC correlations, optimized for 8 Hz, are stated from proton(s) to the indicated carbons