Table 2.
Characteristic 13C NMR data (δC) for talaumidin (1) and its diastereomers 1a−1g.
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Positions | 1 | 1a | 1b | 1c | 1d | 1e | 1f | 1g |
6 and 7 | 13.8 | 14.9 | 9.6 | 12.9 | 9.4 | 11.8 | 14.6 | 15.0 |
13.8 | 15.1 | 11.9 | 12.9 | 11.8 | 11.8 | 14.7 | 15.1 | |
3 and 4 | 50.9 | 46.0 | 43.5 | 44.5 | 43.5 | 41.5 | 43.8 | 45.9 |
51.2 | 48.1 | 47.5 | 44.5 | 47.7 | 41.5 | 43.9 | 48.3 | |
2 and 5 | 88.2 | 83.0 | 84.8 | 87.4 | 84.8 | 82.7 | 83.7 | 83.1 |
88.5 | 87.5 | 85.8 | 87.5 | 85.7 | 82.8 | 83.7 | 87.4 |