Table 1.
1H and 13C NMR data of maslinic acid and pomolic acid isolated from D. crassifolium.
| Position | Maslinic acid (3) (CD3OD/CDCl3) |
Pomolic (4) acid (Acetone-D6) |
||
|---|---|---|---|---|
| delta;C/ppm | δH (J, Hz) (Woo et al., 2014) | δC/ppm | δH (J, Hz) (Lee et al., 2005; Zhu et al., 2012) | |
| 1 | 47.7 | - | 39.5 | - |
| 2 | 68.8 | 3.66(1H, ddd, J1 = 10.3, J2 = 8.5, J3 = 6.5 Hz) |
27.5 | 2.63(2H, ddd, J1 = 8.8, J2 = 9.6, J3 = 6.6 Hz) |
| 3 | 83.7 | 3.45(1H, d, 10.3 Hz) | 78.3 | 3.15(1H, dd, J1 = 4.5, J2 = 10 Hz) |
| 4 | 39.3 | - | 39.5 | - |
| 5 | 55.4 | - | 53.0 | - |
| 6 | 18.5 | - | 18.0 | - |
| 7 | 32.7 | - | 32.4 | - |
| 8 | 39.4 | - | 38.3 | - |
| 9 | 49.0 | 1.90(1H, dd, J1 = 4.2, J2 = 7.8 Hz) |
48.2 | 2.55(1H, s) |
| 10 | 38.3 | - | 37.2 | - |
| 11 | 23.6 | 1.61(2H, dd, J1 = 11.3, J2 = 11.3 Hz) |
23.8 | - |
| 12 | 122.2 | 5.27(1H, t, J = 3.5 Hz ) | 128.5 | 5.28(1H, t) |
| 13 | 144.1 | - | 137.8 | - |
| 14 | 42.0 | - | 40.9 | - |
| 15 | 27.8 | - | 29.2 | - |
| 16 | 23.1 | 1.95(2H, ddd, J1 = 11.6, J2 = 9.6, J3 = 9.6 Hz) |
26.3 | 1.95(2H, d, J = 5 Hz) |
| 17 | 46.5 | - | 47.8 | - |
| 18 | 41.3 | 2.83(1H, dd, J1 = 7.8, J2 = 8.3 Hz) |
54.8 | 2.80(1H, s) |
| 19 | 46.3 | - | 72.5 | - |
| 20 | 30.8 | - | 40.8 | - |
| 21 | 34.0 | - | 26.4 | - |
| 22 | 33.2 | - | 38.1 | 1.94(2H, d, J = 4.6 Hz) |
| 23 | 28.7 | 1.02(3H, s) | 27.8 | 2.55(3H, s) |
| 24 | 16.6 | 0.78(3H, s) | 16.0 | 2.25(3H, s) |
| 25 | 16.8 | 0.98(3H, s) | 15.1 | 1.35(3H, s) |
| 26 | 17.0 | 0.81(3H, s) | 18.1 | 1.21(3H, s) |
| 27 | 25.7 | 1.06(3H, s) | 25.1 | 0.99(3H, s) |
| 28 | 180.8 | - | 180.5 | - |
| 29 | 32.7 | 0.90 (3H, s) | 25.6 | 0.95 (3H, d, J = 6.5 Hz) |
| 30 | 23.6 | 0.93 (3H, s) | 15.5 | 0.79 (3H, d, J = 6.5 Hz) |