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1H-NMR (500 MHz) and 13C NMR (125 MHz) chemical shifts of coprogen B in D2O.
| Position | 1H Chemical Shift δ in D2O (ppm) | 13C Chemical Shift δ in D2O (ppm) | Structural Group |
|---|---|---|---|
| 1 | 168.4 | >C=O | |
| 1′/1” | 169.9 | >C=O | |
| 2/2′/2” | 3.7, m | 52.4 | >CH- |
| 3/3′/3” | 1.6–1.7, m | 27.4 | -CH2-CH2- |
| 4/4′/4” | 1.6–1.7, m | 23.7 | -CH2-CH2- |
| 5/5′/5” | 4.3–4.4, m | 46.8 | -CH2-CH2- |
| 6/6′/6” | 168.4 | >C=O | |
| 7/7′/7” | 6.25, brs | 117.4 | -CH= |
| 8/8′/8” | 151.3 | >C= | |
| 9/9′/9” | 2.8, m | 43.3 | -CH2- |
| 10/10′/10” | 4.08, t (6.28) | 64.8 | -CH2- |
| 11/11′/11” | 1.86, s | 21.9 | -CH3 |
