Table 1.
13C NMR spectroscopic data of compounds 1‒3 (100 MHz, CDCl3) and 4 (100 MHz, DMSO-d6).
| No. | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1 | 142.8 (C) | 71.9 (C) | 152.2 (C) | 165.3 (C) |
| 2 | 204.3 (C) | 76.6 (CH) | 148.2 (C) | 79.6 (CH) |
| 3 | 59.4 (CH) | 122.4 (CH) | 116.5 (CH) | 119.5 (CH) |
| 4 | 83.2 (C) | 140.0 (C) | 74.2 (C) | 143.8 (C) |
| 5 | 32.4 (CH2) | 37.9 (CH2) | 38.8 (CH2) | 35.7 (CH2) |
| 6 | 25.0 (CH2) | 25.4 (CH2) | 26.9 (CH2) | 24.2 (CH2) |
| 7 | 83.8 (CH) | 61.9 (CH) | 74.6 (CH) | 83.4 (CH) |
| 8 | 73.6 (C) | 59.8 (C) | 74.9 (C) | 68.3 (C) |
| 9 | 34.0 (CH2) | 40.2 (CH2) | 38.0 (CH2) | 40.3 (CH2) |
| 10 | 21.5 (CH2) | 23.7 (CH2) | 22.1 (CH2) | 23.0 (CH2) |
| 11 | 128.4 (CH) | 123.9 (CH) | 128.5 (CH) | 80.0 (CH) |
| 12 | 133.3 (C) | 136.1 (C) | 131.4 (C) | 71.3 (C) |
| 13 | 39.1 (CH2) | 35.2 (CH2) | 38.3 (CH2) | 36.8 (CH2) |
| 14 | 20.0 (CH2) | 27.5 (CH2) | 22.3 (CH2) | 20.1 (CH2) |
| 15 | 167.0 (C) | 67.4 (C) | 123.7 (C) | 121.2 (C) |
| 16 | 75.9 (CH) | 69.4 (CH2) | 170.3 (C) | 174.5 (C) |
| 17 | 13.2 (CH3) | 12.1 (CH3) | 8.8 (CH3) | 8.5 (CH3) |
| 18 | 25.2 (CH3) | 15.6 (CH3) | 29.5 (CH3) | 16.2 (CH3) |
| 19 | 25.8 (CH3) | 16.7 (CH3) | 25.5 (CH3) | 20.0 (CH3) |
| 20 | 15.3 (CH3) | 14.9 (CH3) | 15.9 (CH3) | 23.4 (CH3) |