Table 3.
1H and 13C NMR data for the MPS, (δ, ppm).
| Sugar Residue | H-1 C-1 |
H-2 C-2 |
H-3 C-3 |
H-4 C-4 |
H-5 C-5 |
H-6 C-6 |
|---|---|---|---|---|---|---|
| →3)-α-d-GalpNAcA-(1→ A |
5.19 100.4 |
4.26 49.6 |
3.96 77.0 |
4.56 75.7 |
4.19 72.1 |
n.d |
| →3)-β-d-GlcpNAc-(1→ B |
n.d 104.1 |
n.d 55.9 |
n.d 81.9 |
3.50 72.1 |
3.38 77.0 |
3.93, 3.75 61.9 |
| →2)-β-d-Ribf-(1→ C |
5.55 105.3 |
4.16 84.4 |
4.11 72.1 |
3.98 83.0 |
3.77, 3.65 64.7 |
|
| β-d-GalpNAcA-(1→ D |
4.92 102.6 |
4.03 53.5 |
3.88 71.4 |
4.25 70.6 |
4.61 75.7 |
n.d |
Chemical shifts of the N-acetyl groups are δH 2.04–1.90 and δC 23.5 (CH3), and 176.4–174.8 (CO). n.d., not determined.