Table 2.
Spectral assignments for protons of the bicycloundecane moiety of (2S,7R)-7-(carboxymethylcarbamoyl)-5-oxo-9-thia-1,6-diaza-bicyclo-[4.4.1]undecane-2-carboxylic acid, BiGF2. Long range W-couplings are shown as dotted lines
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|---|---|---|---|---|
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| Proton | Multiplicity | 1H Integration | J/Hz | δ 1H |
| 2 | dd | 1 | 3.4, 9.9 | 3.5 |
| 3 | m | 2 | 2.1 | |
| 4(α) | ddd | 1 | 4.6, 8.4, 13.7 | 3.1 |
| 4(β) | ddd | 1 | 6.9, 9.5, 16.7 | 2.7 |
| 7 | dd | 1 | 6.0, 11.8 | 5.0 |
| 8(α) pro-R | ddd | 1 | 1.1, 5.9, 15.6 | 3.5 |
| 8(β) pro-S | dd | 1 | 11.8, 15.5 | 3.2 |
| 10(α) pro-S | d | 1 | 14.1 | 4.2 |
| 10(β) pro-R | ddd | 1 | 1.1, 1.1, 14.1 | 3.9 |
| 11(α) pro-R | dd | 1 | 1.1, 15.8 | 5.0 |
| 11(β) pro-S | d | 1 | 15.8 | 4.4 |