Table 1.
Secondary metabolites from S. tetrasperma stem bark.
| No. | RT | M-H m/z | MS/MS | Tentatively Identified Compounds |
|---|---|---|---|---|
| 1 | 0.95 | 507 | 169, 345, 417 | Gallic acid glucuronide-glucoside |
| 2 | 1.05 | 133 | - | Malic acid |
| 3 | 1.37 | 191 | 111, 173 | Quinic acid |
| 4 | 2.29 | 315 | 153 | Protocatechuic acid 3-O-hexoside * |
| 5 | 2.60 | 331 | 125, 169, 313 | Gallic acid glucoside |
| 6 | 2.79 | 447 | 163, 315 | Coumaric acid galloyl pentoside |
| 7 | 3.46 | 609 | 305, 441, 457 | (epi)Gallocatechin digallate |
| 8 | 5.24 | 593 | 289, 425, 575 | (epi)Catechin-(epi)-gallocatechin |
| 9 | 5.91 | 865 | 289, 451, 595 | (epi)Catechin-(epi)catechin-(epi)catechin |
| 10 | 6.55 | 609 | 305, 423, 441 | (epi)Gallocatechin-(epi)-gallocatechin |
| 11 | 8.46 | 305 | 179, 221, 287 | (epi)Gallocatechin |
| 12 | 11.82 | 881 | 289, 577, 695 | (epi)Gallocatechin-(epi)catechin-(epi)catechin |
| 13 | 12.81 | 577 | 289, 407, 451 | (epi)Catechin-(epi)catechin # |
| 14 | 13.56 | 577 | 289, 407, 451 | (epi)Catechin-(epi)catechin # |
| 15 | 14.16 | 289 | 179, 285, 245 | Epicatechin |
| 16 | 15.12 | 289 | 179, 285, 245 | Catechin # |
| 17 | 21.73 | 423 | 161, 285 | Salicortin * |
| 18 | 29.58 | 451 | 169, 313, 331 | p-Hydroxy benzoyl galloyl glucose |
| 19 | 30.45 | 435 | 153, 297, 315 | p-Hydroxy benzoyl protocatechuic acid glucose |
| 20 | 32.07 | 423 | 145, 163, 307 | Grandidentatin # |
| 21 | 33.26 | 423 | 145, 163, 307 | Grandidentatin isomer |
| 22 | 36.41 | 477 | 151, 179, 315 | Isorhamnetin-3-O-glucoside |
| 23 | 37.82 | 431 | 145, 163, 307 | Trichocarposide * |
| 24 | 38.19 | 431 | 145, 163, 307 | Trichocarposide isomer |
| 25 | 39.33 | 431 | 145, 163, 307 | Trichocarposide isomer |
| 26 | 43.23 | 435 | 179, 273 | Phlorizin |
| 27 | 49.29 | 569 | 307, 423, 431 | Coumaroyl dihydrobenzoylsalicin * |
| 28 | 5.92 | 631 | 191, 329, 353 | Chlorogenic acid derivative |
| 29 | 53.02 | 569 | 307, 423, 431 | Coumaroyl dihydrobenzoylsalicin isomer * |
| 30 | 55.21 | 527 | 155, 405 | Tremulacin * |
| 31 | 56.32 | 577 | 269 | Terniflorin * |
| 32 | 62.93 | 309 | 171, 251, 291 | Fatty acid derivative |
| 33 | 70.32 | 311 | 293, 311 | Eicosanoic acid |
| 34 | 72.48 | 723 | 269, 453, 559, 577 | Coumaroyl-terniflorin |
| 35 | 75.53 | 271 | 209, 253, 271 | Unidentified |
| 36 | 77.26 | 293 | 171, 235, 275, 293 | Hydroxy-octadecatrienoic acid * |
| 37 | 79.92 | 295 | 171, 277, 295 | Hydroxy-octadecadienoic acid * |
| 38 | 81.01 | 295 | 171, 277, 295 | Hydroxy-octadecadienoic acid isomer |
| 39 | 82.39 | 293 | 113, 249, 293 | Hydroxy-octadecatrienoic acid isomer |