Table 2.
The 1H-NMR of the flavonoid components isolated from Salvia macrosiphon
| Carbon No. | 1 a | 4 b | 5 b |
|---|---|---|---|
| 1 | - | - | - |
| 2 | - | - | - |
| 3 | 6.54 (s) | 6.88 (s) | 6.72 (s) |
| 4 | - | - | - |
| 5 | - | - | - |
| 6 | 6.49 (d, J = 2.5) | 6.84 (d, J = 1.8) | 6.83 (d, J = 1.8 ) |
| 7 | - | - | - |
| 8 | 6.37 (d, J = 2.5) | 6.94 (d, J = 1.8) | 6.78 (d, J = 1.8) |
| 9 | - | - | - |
| 10 | - | - | - |
| 1’ | - | - | - |
| 2’ | 7.85 (d, J = 9) | 7.96 (d, J = 8.7) | 7.41(d, J = 1.8) |
| 3’ | 7.02 (d, J = 9) | 7.96 (d, J = 8.8) | |
| 4’ | |||
| 5’ | 7.02 (d, J = 9) | 7.19 (d, J = 8.8) | 6.88 (d, J = 8.3) |
| 6’ | 7.85 (d, J = 9) | 8.04 (d, J = 8.7) | 7.44 (dd, J = 8.5, 1.8) |
| 1’’ | - | 5.07 (d, J = 7.3) | 5.07 (d, J = 7.3) |
| 2’’- 6’’ | - | 3.17-3.49 (m) | 3.16-3.73 (m) |
| 6-OMe | - | - | - |
| 7-OMe | 3.89 (s) | - | - |
| 4’- OMe | 3.88 (s) | - | - |
| 5-OH | 12.8 | 12.9 | 12.5 |
Note: a measured in CDCl3, b in DMSO-d6