Official Journal of the Japan Wood Research Society
Table 3 1H and 13C (HSQC and HMBC) NMR (600 MHz, 298 K) assignments for Fraction III
From: Origin and characterisation of the extractable colour of oak heartwood used for ageing spirits
1H NMR | 13C NMR (HSQC and HMBC) | Groups and functions |
|---|---|---|
0 < δ < 2.5 | 11 < δ < 57 | Alkyl substituents |
3 < δ < 5.5 | 53 < δ < 101 | Sugar rings |
6.3 < δ < 7.5 | 102 < δ < 168.2 | Phenolics |