Table 3.
Major compounds identified in the ethanol extract of P. serratifolia leaves using LC-QTOF-MS/MS based on positive and negative modes.
| Compounds | RT | Area (%) | Formula | ESI | [M-H]+/−[M-H]− (mz) | Major fragment |
|---|---|---|---|---|---|---|
| Scroside E | 7.22 | 12.36 | C30H38O16 | + | 673 | 672, 293, 147 |
| 7.48 | 11.34 | — | 671 | 653 | ||
| Campneoside I | 8.17 | 4.45 | C30H38O16 | — | 653 | 653 |
| Forsythoside B | 8.32 | 15.51 | C34H44O19 | — | 756 | 755 |
| Forsythoside A | 8.49 | 31.33 | C29H36O15 | + | 625 | 663, 642, 608, 325, 163 |
| Isoacteoside | 8.50 | 44.17 | C29H36O15 | — | 623 | 623 |
| Lavandulifolioside | 8.60 | 22.75 | C34H44O19 | — | 755 | 755 |
| 8.60 | 30.57 | + | 757 | 774, 325 | ||
| Diosmin | 9.42 | 9.23 | C28H32O15 | + | 609 | 609, 325, 463 |
| Nobilin D | 12.24 | 8.75 | C17H20O6 | + | 321 | 307, 161 |