Table 1.
NMR data of compound 5 in CD3OD.
| Position | δC (Type) | δH (J in Hz) | HMBC (H→C) |
|---|---|---|---|
| 1 | 93.0 (CH) | 5.62 (d, J = 4.2 Hz) | C-3, C-5, C-1′ |
| 3 | 140.3 (CH) | 6.28 (dd, J = 6.3, 1.8 Hz) | C-1, C-4 |
| 4 | 105.9 (CH) | 5.03 (dd, J = 6.3, 3.6 Hz) | C-1, C-3, C-5, C-9 |
| 5 | 37.1 (CH) | 2.77 (m) | C-6, C-8, C-9 |
| 6 | 93.5 (CH) | 3.62 (d, J = 6 Hz) | C-5, C-7, C-OCH3 |
| 7 | 70.2 (CH) | 4.04 (d, J = 7 Hz) | C-6, C-8,C-10 |
| 8 | 81.5 (C) | ||
| 9 | 48.9 (CH) | 2.45 (dd, J = 4.2 Hz; 10.2 Hz) | C-4, C-5, C-10 |
| 10 | 63.7 (CH2) | 3.95/ 3.75 (d, J = 12.0 Hz) | C-7, C-8, C-9 |
| 1′ | 99.6 (CH) | 4.65 (d, J = 7.8 Hz) | C-1 |
| 2′ | 74.8 (CH) | 3.20 (t, J = 7.8 Hz) | C-3′, C-1′ |
| 3′ | 77.8 (CH) | 3.29 (ov) | C-4′ |
| 4′ | 71.6 (CH) | 3.37 (ov) | C-3′, C-5′ |
| 5′ | 77.9 (CH) | 3.30 (ov) | C-4′ |
| 6′ | 63.7 (CH2) | 3.87(d, J = 13.8 Hz) 3.66 (ov) |
C-5′ |
| -OCH3 | 58.1 (CH3) | 3.46 (s) | C-6 |
d = doublet, dd = doublet of doublets, m = multiplet; ov = overlapped; s = singlet; t = triplet; J values (Hz) are reported in brackets.