Table 3.
Chemical shift values from the 13C-NMR of compounds 3d, 4d, 5d, and 6d in acetone-d6.a Please refer to the structures in Table 4 for skeleton numbering.
| Chemical Shifts (δ) (Carbon Position) | |||
|---|---|---|---|
| 3d | 5d | 4d | 6d |
| 87.6 (C1′) | 87.4 (C1′) | 87.6 (C1′) | 88.0 (C1′) |
| 37.1 (C2′) | 40.5 (C2′) | 37.0 (C2′) | 41.1 (C2′) |
| 76.6 (C3′) | 73.2 (C3′) | 76.1 (C3′) | 73.0 (C3′) |
| 83.5 (C4′) | 89.8 (C4′) | 83.7 (C4′) | 90.0 (C4′) |
| 65.1 (C5′) | 64.2 (C5′) | 64.7 (C5′) | 63.9 (C5′) |
| 143.8 (C3) | 143.6 (C3) | 136.3 (C3) | 136.1 (C3) |
| 107.2 (C4) | 106.7 (C4) | 105.4 (C4) | 104.9 (C4) |
| 146.0 (C5) | 145.8 (C5) | 150.6 (C5) | 150.5 (C5) |
| 17.6 (C6) | 17.6 (C6) | 15.3 (C6) | 15.2 (C6) |
| 118.1 (CN) | 118.0 (CN) | 117.0 (CN) | 117.1 (CN) |
| 166.4 (C6′′′) | 166.5 (C6′′′) | ||
| 166.5 (C6′′′′) | 166.5 (C6′′′′) | ||
| * | 129.3 (C1′′) | # | 134.2 (C1′′) |
| * | 131.6 (C2′′) | # | 127.9 (C2′′) |
| * | 129.9 (C3′′) | # | 129.7 (C3′′) |
| * | 135.6 (C4′′) | # | 132.6 (C4′′) |
a The chemical shift values presented in Table 3 were all measured in acetone-d6 (on an Bruker Avance 400 instrument) and may therefore differ from those in Table 1, which were measured in CDCl3 (on Bruker Avance 300 instrument). * Benzene ring Carbons: Quaternary C: 145.0, 144.7, 135.6, 129.3, 128.3, 128.1; CHs: 131.6, 130.5, 130.5, 130.0, 130.0, 129.9. # Benzene ring Carbons: Quaternary C: 145.0, 144.5, 134.1, 132.7, 128.1; CHs: 130.5, 130.4, 130.1, 129.9, 129.5.