Table 2.
Identification of 21 compounds from leaves of C. paliurus by developed HPLC–Q–TOF–MS.
| Peak No. | tR (min) | [M ‒ H]− | MS/MS Fragment Ion (m/z) | Formula | Identification |
|---|---|---|---|---|---|
| 1 | 7.4 | 353.9874 | 191.0554 | C16H8O9 | 3-O-Caffeoylquinic acid |
| 2 | 7.8 | 353.0875 | 191.0552;179.0339;135.0444 | C16H8O9 | 4-O-Caffeoylquinic acid |
| 3 | 14.9 | 477.0673 | 301.0351;178.9979;151.003 | C21H18O13 | Quercetin-3-O-glucuronide |
| 4 | 15.4 | 463.0888 | 301.0343;271.0244;178.9979;151.0029 | C21H20O12 | Quercetin-3-O-galactoside |
| 5 | 15.8 | 463.0888 | 301.0338;271.0239;178.9981;151.0029 | C21H20O12 | Isoquercitrin |
| 6 | 17.6 | 461.9727 | 286.0431;285.0401;113.0235;85.0296 | C21H18O12 | Kaempferol-3-O-glucuronide |
| 7 | 18.5 | 447.0935 | 285.0388;284.0319;255.0295 | C21H20O11 | Kaempferol-3-O-glucoside |
| 8 | 18.8 | 447.0973 | 301.0337;285.0388;255.0294;217.0133 | C21H20O11 | Quercetin-3-O-rhamnoside |
| 9 | 19.8 | 515.1199 | 353.0864;191.0553;179.0342;135.0443 | C25H24O12 | 4,5-di-O-Caffeoylquinic acid |
| 10 | 23.4 | 431.0981 | 285.0394;255.0295;227.0342 | C21H20O10 | Kaempferol-3-O-rhamnoside |
| 11 | 40.8 | 577.136 | 397.2221;285.0394;163.0389;145.0289 | C30H26O12 | Kaempferol-3-(6′′-(Z)-cinnamylglucoside) |
| 12 | 47.1 | 487.3429 | 445.2942;401.3056;389.2698 | C30H48O5 | Arjunolic acid |
| 13 | 49.7 | 485.3275 | / | C30H46O5 | Cyclocaric acid B |
| 14 | 54.2 | 621.4001 | 521.3107;489.3571 | C35H58O9 | Pterocaryoside B |
| 15 | 60.0 | 635.4162 | 535.3265;489.3573 | C36H60O9 | Pterocaryoside A |
| 16 | 60.5 | 471.3481 | 145.0286 | C30H48O4 | Hederagenin |
| 17 | 67.2 | 621.4017 | 489.3578;469.3318 | C35H58O9 | Cyclocarioside J |
| 18 | 74.4 | 635.4177 | 489.3579 | C36H60O9 | Cyclocarioside III |
| 19 | 75.2 | 603.3894 | 521.3107;489.3573;471.347 | C35H56O8 | Cyclocarioside II |
| 20 | 83.5 | 455.3549 | / | C30H48O3 | Oleanolic acid |
| 21 | 84.3 | 277.2192 | 146.9664; 197.9641;248.9617 | C18H30O2 | Unknown |