Table 2.
NMR data for compound 7 (methanol-d4).
| Pos. | δHa (J in Hz) | δ C b | HMBCc |
|---|---|---|---|
| 1 | 110.9, qC | ||
| 2 | 163.2, qC | ||
| 3 | 6.13, s | 109.0, CH | 1, 2, 5, 7, 8 |
| 4 | 149.6, qC | ||
| 5 | 6.13, s | 109.0, CH | 1, 3, 6, 7, 8 |
| 6 | 163.2, qC | ||
| 7 | 201.1, qC | ||
| 8 | 2.20, s | 22.1, CH3 | 3, 4, 5 |
| 1′ | 130.6, qC | ||
| 2′ | 7.17, d (2.4) | 109.0, CH | 1′, 3′, 4′, 6′, 7′ |
| 3′ | 161.6, qC | ||
| 4′ | 7.03, d (2.4) | 108.2, CH | 2′, 3′, 5′, 6′ |
| 5′ | 155.7, qC | ||
| 6′ | 130.4, qC | ||
| 7′ | 167.7, qC | ||
| 8′ | 3.70, s | 52.6, CH3 | 7′ |
| 9′ | 3.86, s | 56.2, CH3 | 3′ |
| 1′′ | 5.56, d (4.4) | 103.3, CH | 5′, 2′′, 3′′, 4′′ |
| 2′′ | 4.00, dd (6.4, 4.4) | 73.3, CH | 1′′ |
| 3′′ | 3.90, dd (6.4, 3.2) | 70.7, CH | 1′′ |
| 4′′ | 3.96, dd (6.8, 3.2) | 88.1, CH | |
| 5′′ | 3.55, m | 63.0, CH2 | 3′′, 4′′ |
a Recorded at 400 MHz. b Recorded at 100 MHz. c HMBC correlations, optimized for 8 Hz, are from proton(s) stated by the indicated carbon.