Table 2.
13C-NMR spectroscopic data (500 MHz) of compounds 14–18.
| Position | 14 c | 15 c | 16 c | 17 a | 18 b | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | - | - | - | - | - | ||||||
| 2 | 148.2 | 85.1 | 79.5 | 158.8 | 159.5 | ||||||
| 3 | 137.3 | 73.8 | 67.1 | 135.3 | 135.4 | ||||||
| 4 | 177.5 | 198.5 | 30.7 | 179.1 | 179.4 | ||||||
| 5 | 162.7 | 165.5 | 157.6 | 158.0 | 158.5 | ||||||
| 6 | 99.4 | 97.6 | 96.2 | 99.8 | 100.1 | ||||||
| 7 | 165.8 | 169.4 | 157.6 | 165.4 | 166.0 | ||||||
| 8 | 94.6 | 96.6 | 95.8 | 94.8 | 95.0 | ||||||
| 9 | 158.4 | 164.7 | 157.2 | 162.9 | 163.1 | ||||||
| 10 | 104.7 | 101.9 | 99.9 | 105.5 | 105.7 | ||||||
| 1' | 123.9 | 129.5 | 131.6 | 122.4 | 122.9 | ||||||
| 2' | 130.8 | 130.5 | 107.0 | 132.4 | 132.4 | ||||||
| 3' | 116.5 | 116.3 | 146.2 | 116.1 | 116.2 | ||||||
| 4' | 140.7 | 159.4 | 133.0 | 161.0 | 161.5 | ||||||
| 5' | 116.5 | 116.3 | 146.2 | 116.1 | 116.2 | ||||||
| 6' | 130.8 | 130.5 | 107.0 | 132.4 | 132.4 | ||||||
| 1'' | - | - | - | 104.5 | 104.2 | ||||||
| 2'' | - | - | - | 75.5 | 75.9 | ||||||
| 3'' | - | - | - | 71.1 | 71.9 | ||||||
| 4'' | - | - | - | 75.3 | 75.9 | ||||||
| 5'' | - | - | - | 78.1 | 78.1 | ||||||
| 6'' | - | - | - | 63.9 | 64.5 | ||||||
| 1''' | - | - | - | 127.3 | 127.2 | ||||||
| 2''' | - | - | - | 133.8 | 133.9 | ||||||
| 3''' | - | - | - | 115.7 | 115.9 | ||||||
| 4''' | - | - | - | 159.7 | 161.3 | ||||||
| 5''' | - | - | - | 115.7 | 115.9 | ||||||
| 6''' | - | - | - | 133.8 | 133.9 | ||||||
| 7''' | - | - | - | 144.5 | 146.7 | ||||||
| 8''' | - | - | - | 116.3 | 116.9 | ||||||
| 9''' | - | - | - | 166.3 | 169.0 | ||||||
a In acetone-d6; b In chloroform-d; c In methanol-d4.