Table III.
3 J H-C-C-H in the Neu5Ac side chain of GM3βProN3, 9NAcGM3βProN3 and 9OAcGM3βProN3 oligosaccharides at 25 and −10°C (in parentheses)*
| J coupling (Hz) | H9’-H9** | H8-H9 | H8-H9’ | H8-H7 | H7-H6 |
|---|---|---|---|---|---|
| GM3βProN3 | −11.8 ± 0.1 (−11.7 ± 0.2) |
2.4 ± 0.1 (2.2 ± 0.1) |
6.3 ± 0.2 (6.7 ± 0.2) |
9.7 ± 0.2 (9.3 ± 0.3) |
1.4 ± 0.2 (1.3 ± 0.3) |
| 9NAcGM3βProN3 | −14.0 ± 0.2 (−14.4 ± 0.4) |
2.9 ± 0.2 (2.3 ± 0.1) |
7.9 ± 0.1 (8.4 ± 0.3) |
8.9 ± 0.1 (9.4 ± 0.3) |
1.5 ± 0.1 (1.5 ± 0.1) |
| 9OAcGM3βProN3 | −11.7 ± 0.1 (−11.7 ± 0.3) |
2.0 ± 0.1 (1.6 ± 0.3) |
6.4 ± 0.1 (6.5 ± 0.3) |
8.8 ± 0.3 (9.1 ± 0.2) |
1.6 ± 0.3 (1.3 ± 0.3) |
* Experimental errors are based repeated measurements. The errors are within the digital resolution (± 0.3 Hz).
** H9’-H9 is 2 J H-C-H.