Table 2.
Chromatographic and spectrometric data of kaempferol and its derivatives identified compounds in ethanolic extracts of Phyllanthus species.
| S. No. | Retention time (min) | Observed. [M-H]− | Error (ppm) | Molecular formula | Fragment ions (Relative intensity %) |
Compounds | Distribution |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| [Y]− | [Y-H]−. | [Y-CH2O]− | [Y-2CHO]− | PEB | PEF | PEL | PA | PFL | PFT | PFS | PN | ||||||
| 25 | 13.13 | 739.2092 | 0.20 | C33H40O19 | 285.0385 (65) | 284.0319 (100) | 255.0315 (35) | 227.0332 (10) | Robinin | – | – | – | + | + | + | – | – |
| 28 | 13.53 | 593.1551 | −0.65 | C27H30O15 | 285.0303 (100) | 284.0331 (78) | 255.0299 (12) | 227.0327 (3) | Kaempferol-3-O-rutinoside† | – | – | – | + | + | + | – | + |
| 29 | 13.64 | 609.1462 | 0.05 | C27H30O16 | 285.0348 (100) | 284.0304 (15) | 255.0427 (25) | 227.0542 (5) | Kaempferol-diglucoside | + | + | + | + | – | – | – | + |
| 38 | 14.36 | 447.0930 | 0.65 | C21H20O11 | 285.0368 (43) | 284.0315 (100) | 255.0276 (23) | 227.0332 (18) | Kaempferol 3-O-hexoside | + | + | + | + | + | + | ||
| 40 | 14.70 | 417.0828 | 0.06 | C20H18O10 | 285.0348 (30) | 284.0304 (100) | 255.0275 (36) | 227.0329 (17) | Kaempferol derivatives | – | + | – | – | – | – | – | – |
| 41 | 14.84 | 461.0722 | −0.25 | C21H18O12 | 285.0390 (100) | 284.0323 (14) | 255.0453 (3) | 227.0590 (5) | Kaempferol 3-glucuronide | + | + | – | + | + | – | – | + |
| 43 | 15.14 | 431.0983 | 0.18 | C21H20O10 | 285.0437 (61) | 284.0370 (100) | 255.0299 (42) | 227.0327 (19) | Kaempferol 3-hexoside | – | + | + | – | + | + | + | – |
| 48 | 16.31 | 285.0477 | 0.54 | C15H10O6 | – | – | 255.0219 (32) | 227.0356 (45) | Kaempferol† | + | + | + | + | + | + | + | + |
PEB: P. emblica bark; PEF: P. emblica fruit; PEL: P. emblica leaf; PA: P. amarus; PFL: P. fraternus leaf; PFT: P. fraternus twig; PFS: P. fraternus stem; PN: P. niruri