Table 3.
NMR data (𝛅 in ppm) for compound 3 (DMSO-d6, 500 MHz, 24 °C). Carbon chemical shifts derived from HSQC and HMBC spectra.
| Position | 𝛅(13C) | 𝛅(1H), (Mult, J in Hz) | Position | 𝛅(13C) | 𝛅(1H), (Mult, J in Hz) |
|---|---|---|---|---|---|
| 1 | n.d. | - | 1′ | 98.4 | 4.89 (br d, 3.5) |
| 2 | n.d. | - | 2′ | 30.7 | 2.04 (m) 1.79 (td, 12.3, 3.6) |
| 3 | 159.9 | - | 3′ | 75.0 | 3.43 (m) |
| 4 | 189.2 | - | 3′α | 57.1 | 3.24 (s) |
| 5 | 48.9 | 3.29 (m) 2.98 (d, 16.2) | 4′ | 73.9 | - |
| 6 | 78.2 | - | 5′ | 67.5 | 4.41 (m) |
| 7 | 198.7 | - | 6′ | 16.5 | 1.10 (m) |
| 8 | 77.7 | 3.64 (d, 10.1) | 7′ | 69.8 | 5.27 (quart., 6.8) |
| 9 | 69.2 | 3.48 (m) | 8′ | 16.4 | 1.18 (d, 6.7) |
| 10 | 74.5 | 4.08 (br t) | 9′ | 175.9 | - |
| 11 | 70.7 | 4.66 (dd, 10.2, 1.8) | 10′ | 41.5 | 2.38 (m) |
| 12 | 71.9 | 4.00 (dt, 9.9, 3.4) | 11′ | 26.9 | 1.60 (m) 1.45 (m) |
| 13 | 62.9 | 3.77 (m) | 12′ | 12.2 | 0.88 (t, 7.0) |
| 14 | 170.8 | - | 13′ | 17.5 | 1.09 |
| 15 | 21.2 | 1.96 (s) | 1′′ | 168.5 | - |
| 2′′ | 80.2 | 5.04 (d, 7.5) | |||
| 3′′ | 49.8 | 4.36 (m) | |||
| 4′′ | 16.5 | 1.10 (m) | |||
| 5′′ | 167.8 | - | |||
| 1′′′ | 172.2 | - | |||
| 2′′′ | 52.6 | 4.46 (m) | |||
| 3′′′ | 34.2 | 3.62 (m) 3.26 (m) | |||
| 4′′′ | 170.3 | - | |||
| 5′′′ | 23.2 | 1.85 (s) | |||