Table 1.
NMR spectroscopic data for compound 1.
| Pos. | δ C a,b | δHa,c (J in Hz) | Pos. | δ C a,b | δHa,c (J in Hz) | ||
|---|---|---|---|---|---|---|---|
| Kaempferol | Glucose B | ||||||
| 2 | 158.5 | 1′′′ | 106.2 | 4.75 (d, 7.5) | |||
| 3 | 135.3 | 2′′′ | 75.7 | 3.66 * | |||
| 4 | 180.0 | 3′′′ | 77.9 | 3.49 * | |||
| 5 | 163.1 | 4′′′ | 72.0 | 3.41 * | |||
| 6 | 99.9 | 6.12 (d, 2.1) | 5′′′ | 76.3 | 3.43 * | ||
| 7 | 165.7 | 6′′′ | 62.4 | 3.64 *, 3.51 * | |||
| 8 | 94.8 | 6.18 (d, 2.1) | |||||
| 9 | 158.3 | Ferulic acid | |||||
| 10 | 105.8 | 1′′′′ | 127.4 | ||||
| 2′′′′ | 111.2 | 6.82 (d, 1.9) | |||||
| 1’ | 122.6 | 3′′′′ | 149.2 | ||||
| 2’ | 132.8 | 8.06 (m) | 4′′′′ | 150.5 | |||
| 3’ | 116.4 | 6.90 (m) | 5′′′′ | 116.3 | 6.65 (d, 8.1) | ||
| 4’ | 161.7 | 6′′′′ | 124.0 | 6.72 (dd, 1.9, 8.2) | |||
| 5’ | 116.4 | α | 146.9 | 7.34 (d, 15.9) | |||
| 6’ | 132.8 | - | β | 115.0 | 6.05 (d, 15.9) | ||
| -COO | 169.0 | ||||||
| Glucose A | -OCH3 | 56.3 | 3.79 (s) | ||||
| 1’’ | 101.3 | 5.12 (d, 7.5) | |||||
| 2’’ | 84.7 | 3.71 * | |||||
| 3’’ | 78.3 | 3.11 * | |||||
| 4’’ | 71.0 | 3.39 * | |||||
| 5’’ | 77.8 | 3.53 * | |||||
| 6’’ | 64.8 | 4.44 *, 4.45 * | |||||
a Measured in methanol-d4, b 100 MHz, c 400 MHz, * overlapped signal, assignments were done by HSQC, HMBC, COSY, and NOESY experiments.