Table 3.
1H- and 13C-NMR chemical shifts of sorbitol-6-O-laurate (SL) with their molecular assignments.
| Molecular Group | 13C Shift (ppm) | 1H Shift (ppm) | Multiplicity | Coupling (Hz) |
|---|---|---|---|---|
| Sorbitol | ||||
| -C1H2-O- * | 66.66 | 4.35, 4.18 | dd, dd | 3.0, 11.5, 6.3 |
| -C2H- | 70.69 | 3.91 | m | - |
| -C3H- | 73.24 | 3.68 | dd | 5.28, 7.37 |
| -C4H- | 70.27 | 3.93 | t | 4.84 |
| -C5H- | 74.32 | 3.83 | m | - |
| OH-C6H2- | 64.25 | 3.71 | m | - |
| Laurate | ||||
| O=C1-OH * | 174.46 | - | - | - |
| -C2H2- * | 34.64 | 2.33 | t | 7.6 |
| -C3H2- | 25.46 | 1.61 | m | - |
| -C4H2- | 29.72 | 1.32 | m | - |
| -C5H2- | 30.12 | 1.28 | m | - |
| -C6H2- | 30.12 | 1.28 | m | - |
| -C7H2- | 30.12 | 1.28 | m | - |
| -C8H2- | 30.12 | 1.28 | m | - |
| -C9H2- | 30.12 | 1.28 | m | - |
| -C10H2- | 30.12 | 1.28 | m | - |
| -C11H2- | 23.22 | 1.29 | m | - |
| -C12H3 | 14.35 | 0.88 | t | 7.00 |
* Acylation site; d = doublet; t = triplet; m = multiplet.