Table 1.
Proton and Carbon Chemical Shifts of Capsular Polysaccharide From SK95
| Chemical Shift, ppm | ||||||
|---|---|---|---|---|---|---|
| Sugar Residue | H1/C1 | H2/C2 | H3/C3 | H4/C4 | H5/C5 | H6/CH3 |
| →3)-α-l-Rhap-(1→ | 5.13 | 4.29 | 4.09 | 3.69 | 3.89 | 1.32 |
| 2 ↑ | 104.6 [170 Hz]a | 81.1 | 83.1 | 76.3 | 74.1 | 21.2 |
| →3)-α-l-Rhap-(1→ | 5.02 | 4.15 | 3.95 | 3.55 | 3.88 | 1.29 |
| 106.8 [171 Hz] | 74.7 | 83.1 | 76.1 | 73.9 | 21.3 | |
| →6)-α-d-Glcp-(1→ | 5.01 | 3.55 | 3.75 | 3.66 | 4.28 | 4.12, 3.71 |
| 102.4 [171 Hz] | 76.0 | 77.9 | 73.8 | 75.0 | 69.9 | |
| α-d-GlcpA-(1→ | 4.95 [2.4 Hz] | 3.59 | 3.74 | 3.52 | 3.94 | … |
| 102.9 [169 Hz] | 76.2 | 77.7 | 76.8 | 77.0 | 181.1 | |
| →3)-β-l-Rhap-(1→ | 4.86 | 4.15 | 3.64 | 3.46 | 3.43 | 1.32 |
| 105.2 [163 Hz] | 75.2 | 85.1 | 76.1 | 76.7 | 21.4 | |
| →4)-β-d-Glcp-(1→ | 4.67 [6.3 Hz] | 3.25 | 3.60 | 3.59 | 3.48 | 3.96, 3.78 |
| 109.0 [161 Hz] | 78.6 | 80.5 | 81.9 | 79.3 | 65.9 | |
aAnomeric one-bond 13C-1H and resolved three-bond 1H-1H J couplings are given in brackets.