Table 3.
1H,13C-NMR spectral data of tri-n-butyl chebulate [in DMSO-d6, TMS]
| No. | δ H | δ C | No. | δ H | δ C |
|---|---|---|---|---|---|
| 1 | 162.9 | 1′ | 3.96 (2H, m) | 64.9 | |
| 2 | 2′ | 1.47 (2H, m)a | 30.0d | ||
| 3 | 5.27 (1H, d, J = 0.8 Hz) | 76.4 | 3′ | 1.25 (2H, m)b | 18.5e |
| 4 | 3.70 (1H, dd, J = 0.8 Hz, 7.6 Hz) | 35.7 | 4′ | 0.84 (3H, m)a | 13.5f |
| 5 | 115.7 | 1″ | 3.99 (2H, m) | 64.9 | |
| 6 | 145.5 | 2″ | 1.51 (2H, m)a | 30.0d | |
| 7 | 138.8 | 3″ | 1.29 (2H, m)b | 18.5e | |
| 8 | 142.7 | 4″ | 0.87 (3H, m)c | 13.5f | |
| 9 | 6.92 (1H, s) | 107.5 | 1‴ | 3.90 (2H, t, J = 2.4 Hz) | 63.8 |
| 10 | 114.6 | 2‴ | 1.35 (2H, m)c | 29.9d | |
| 11 | 3.07 (1H, m) | 43.2 | 3‴ | 1.10 (2H, m)b | 18.2e |
| 12 | 2.76 (1H, dd, J = 16.8, 10.8 Hz) | 33.7 | 4‴ | 0.75 (3H, t, J = 7.2 Hz)c | 13.3f |
| 2.35 (1H, dd, J = 16.8, 4.0 Hz) | |||||
| 13 | 169.3 | ||||
| 14 | 172.4 | ||||
| 15 | 171.0 |
a, b, c, d, e, f: overlap, can be exchanged