Table 2.
1H and 13C NMR signals of the isolated ulbactin B in MeOD, which are in good agreement with data reported in the literature [31].
| C | NMR Data (MeOD) from This Study | Configuration of Carbon Atom | NMR Data (CDCl3) from Literature [44] |
||
|---|---|---|---|---|---|
| δC | δH | δC | δH | ||
| 1 | 160.3 | - | C | 159.1 | - |
| 2 | 117.8 | 6.95 | CH | 117.1 | 6.97 |
| 3 | 134.6 | 7.38 | CH | 133.5 | 7.35 |
| 4 | 120.2 | 6.91 | CH | 119.1 | 6.87 |
| 5 | 131.8 | 7.43 | CH | 130.8 | 7.40 |
| 6 | 117.5 | - | C | 116.1 | - |
| 7 | 175.2 | - | C | 174.4 | - |
| 8 | 34.5 | 3.34/3.51 | CH2 | 33.9 | 3.23/3.42 |
| 9 | 82.1 | 5.07 | CH | 80.2 | 5.10 |
| 10 | 62.9 | 5.30 | CH | 63.0 | 5.37 |
| 11 | 30.3 | 2.99/3.29 | CH2 | 30.0 | 3.00/3.31 |
| 12 | 67.6 | 4.60 | CH | 65.5 | 4.55 |
| 13 | 75.7 | 4.02 | CH | 76.0 | 4.05 |
| 14 | 51.4 | - | C | 49.8 | - |
| 15 | 179.9 | - | C | 177.3 | - |
| 16 | 18.8 | 1.12 | CH3 | 18.1 | 1.19 |
| 17 | 24.2 | 1.25 | CH3 | 23.7 | 1.3 |