Table 1. 1H and 13C NMR Spectroscopic Data for Compound 1 (600 MHz, CDCl3).
| position | δC, type | δH | (J in Hz) | HMBC |
|---|---|---|---|---|
| 1 | 79.2, CH | 4.05 | d (5.5) | C-1′, C-3, C-5, OCH3-1, C-2, C-6 |
| OCH3-1 | 60.3, CH3 | 3.64 | s | C-1 |
| OH-2 | 75.6, C–O | 2.96 | br s | C-1, C-1′, C-2, C-3 |
| 3 | 58.1, CH | 4.73 | d (3.6) | C-1, C-1′, C-2, C-4, C-5 |
| 4 | 129.5, CH | 6.00 | ddd (9.9, 3.6, 1.4) | C-2, C-3, C-5, C-6 |
| 5 | 126.4, CH | 5.88 | dd (9.9, 3.1) | C-1, C-3, C-4 |
| 6 | 71.6, CH | 5.82 | ddd (5.5, 3.1, 1.4) | C-1, C-4, C-5, C-7‴ |
| 1′ | 66.6, CH2 | 4.77 | d (AA′) (12.6) | C-1, C-2, C-3, C-7″ |
| 1″ | 129.58, C | |||
| 2″/6″ | 129.7, CH | 7.91 | dd (8.1, 1.3) | C-7, C-3″, C-4″, C-6″ |
| 3″/5″ | 128.5, CH | 7.37 | dd (8.1, 7.6) | C-1″, C-2″, C-4″, C-5″ |
| 4″ | 133.3, CH | 7.50 | tt (7.6, 1.3) | C-2″, C-3′’, C-5″, C-6″ |
| 7″ | 166.8, C=O | |||
| 1‴ | 129.63, C | |||
| 2‴/6‴ | 129.8, CH | 7.98 | dd (7.6, 1.6) | C-8, C-3‴, C-4‴, C-6‴ |
| 3‴/5‴ | 128.6, CH | 7.37 | dd (7.6, 7.6) | C-1‴, C-2‴, C-4‴, C-5‴ |
| 4‴ | 133.2, CH | 7.50 | tt (7.6, 1.6) | C-2‴, C-3‴, C-5‴, C-6‴ |
| 7‴ | 166.0, C=O |