Table 1.
U-HPLC/LTQ-Orbitrap analysis of the aqueous extract of the Uncaria Stem with Hooks (UHs).
| No. | tR/min | m/z | MSn fragment ions | Identification |
|---|---|---|---|---|
| 1 | 16.26 | 499.2031 | MS2:337.16, 267.11, 319.15; MS3:171.09, 144.08 | Vincosamide |
| 2 | 18.01 | 535.2632 | MS2:373.21, 355.20, 323.18, 281.05; MS3:160.08, 214.14 | 16,17-Dihydro-O-demethylrhynchophylline-glc or isomer |
| 3 | 18.84 | 535.2635 | MS2:373.21, 355.20, 323.18; MS3:160.08, 214.15, 269.17 | 16,17-Dihydro-O-demethylrhynchophylline-glc or isomer |
| 4 | 21.63 | 383.1956 | MS2:351.17, 267.15, 319.15, 201.10; MS3:160.08, 267.15, 269.17 | Isocorynoxeine |
| 5 | 22.48 | 385.2104 | MS2:353.19, 267.15, 269.17, 160.08; MS3:241.13, 187.09, 213.10 | Isorhynchophylline |
| 6 | 23.79 | 385.2111 | MS2:353.19, 269.17, 267.15, 215.12; MS3:160.08, 213.10, 241.13 | Rhynchophylline |
| 7 | 24.68 | 367.2005 | MS2:224.13, 236.13, 335.18, 298.15; MS3:108.08, 192.10 | Hirsuteine |
| 8 | 25.88 | 369.2156 | MS2:226.14, 238.14, 337.19, 352.19, 298.14; MS3:110.10 | Hirsutine |
| 9 | 24.21 | 385.2106 | MS2:353.19, 269.17, 267.15; MS3:241.13, 160.08, 187.09, 213.10 | Corynoxine B |
| 10 | 26.91 | 385.2105 | MS2:353.19, 267.15, 241.13; MS3:241.13, 187.09, 160.08, 265.13 | Corynoxine |
| 11 | 20.72 | 369.1792 | MS2:337.16, 309.16, 241.13; MS3:158.06, 201.10, 160.08, 213.10 | Isomitraphylline |
| 12 | 21.38 | 369.1794 | MS2:337.16, 309.16; MS3:160.08, 158.06, 201.10, 213.10, 187.09 | Mitraphylline |
| 13 | 21.01 | 369.1795 | MS2:337.16, 309.16, 201.10; MS3:160.08, 158.06, 201.10, 309.16 | Uncarine B |
| 14 | 22.54 | 369.1792 | MS2:337.16, 309.16, 281.09; MS3:158.06, 160.08, 201.10, 265.10 | Uncarine A |