Table 1.
NMR spectroscopic data of 1 in MeOH-d4.
| Position | 1 | |
|---|---|---|
| δH (mult., J in Hz) | δC, Type | |
| 1 | - | 176.4, C |
| 3 | 3.38 (m) | 54.0, CH |
| 4 | 2.91 (m) | 46.3, CH |
| 5 | 2.72 (m) | 33.2, CH |
| 6 | - | 151.0, C |
| 7 | 3.90 (d, 9.9) | 72.8, CH |
| 8 | 2.50 (t, 9.9) | 51.9, CH |
| 9 | - | 63.9, C |
| 10a | 2.46 (dd, 13.0, 7.3) | 43.5, CH2 |
| 10b | 2.64 (dd, 13.0, 6.4) | |
| 11 | 0.79 (d, 6.8) | 13.3, CH3 |
| 12a | 5.03 (s) | 114.1, CH |
| 12b | 5.17 (s) | |
| 13 | 6.01 (ddd, 15.2, 9.6, 1.9) | 128.3, CH |
| 14 | 5.22 (m) | 137.3, CH |
| 15a | 2.06 (m) | 40.5, CH2 |
| 15b | 1.79 (dd, 11.2, 2.8) | |
| 16 | 1.51 (m) | 34.0, CH |
| 17a | 1.09 (m) | 34.9, CH2 |
| 17b | 1.26 (m) | |
| 18a | 1.15 (m) | 19.7, CH2 |
| 18b | 1.39 (m) | |
| 19a | 1.52 (m) | 32.6, CH2 |
| 19b | 1.92 (m) | |
| 20 | 5.20 (m) | 76.4, CH |
| 21 | 6.48 (dd, 15.4, 8.5) | 144.0, CH |
| 22 | 6.86 (d, 15.4) | 128.0, CH |
| 23 | - | 198.6, C |
| 24 | 0.89 (d, 6.9) | 20.8, CH3 |
| 25 | - | 171.6, C |
| 26 | 2.04 (s) | 21.1, CH3 |
| 1′ | - | 137.9, C |
| 2′/6′ | 7.08 (d, 7.6) | 130.7/131.0, CH |
| 3′/5′ | 7.32 (t, 7.6) | 129.7/129.6, CH |
| 4′ | 7.23 (t, 7.6) | 127.8, CH |
Recorded at 600 MHz; carbon multiplicities were deduced from HSQC–DEPT-135 spectra.