Table 3. 1H and 13C NMR Spectroscopic Data for Compound 3 (600 MHz, CD2Cl2).
| position | δC, type | δH | (J in Hz) | HMBC |
|---|---|---|---|---|
| 1 | 80.5, CH | 3.88 | d (4.0) | C-2, C-3, C-6, OCH3-1 |
| OCH3-1 | 60.4, OCH3 | 3.61 | s | C-1 |
| 2 | 75.9, C | |||
| OH-2 | 2.79 | br s | C-1, C-2, C-3 | |
| 3 | 79.4, CH | 3.96 | d (2.0) | C-1, C-2, C-4, C-5, C-6, OCH3-3, C-1′ |
| OCH3-3 | 59.1, OCH3 | 3.52 | s | C-3 |
| 4 | 130.2, CH | 6.07 | ddd (8.0, 2.0, 0.8) | C-2, C-3, C-5, C-6 |
| 5 | 126.1, CH | 5.85 | dd (8.0, 3.6) | C-1, C-4, C-6 |
| 6 | 71.4, CH | 5.70 | ddd (4.0, 3.60. 0.8) | C-1, C-2, C-4, C-5, C-7‴ |
| 1′ | 66.0, CH2 | 4.65 | d (11.9) | C-1, C-2, C-7″ |
| 4.56 | d (11.9) | C-1, C-2, C-7″ | ||
| 1″ | 130.3, C | |||
| 2″/6″ | 129.9, CH | 7.85 | m | C-2″/6″, C-3″/5″, C-1″, C-7″ |
| 3″/5″ | 128.8, CH | 7.33 | m | C-3″/5″, C-2″/6″, C-4″ |
| 4″ | 133.4, CH | 7.49 | m | C-3″/5″, C-2″/6″ |
| 7″ | 166.9, C=O | |||
| 1‴ | 130.5, C | |||
| 2‴/6‴ | 130.0, CH | 7.92 | m | C-2‴/6‴, C-3‴/5‴, C-1‴, C-4‴, C-7‴ |
| 3‴/5‴ | 128.9, CH | 7.33 | m | C-2‴/6‴, C-3‴/5‴, C-4‴ |
| 4‴ | 133.7, CH | 7.49 | m | C-3‴/5‴, C-2‴/6‴ |
| 7‴ | 166.3, C=O |