Table 1.
Molecular mass and fragmentation pattern of compounds identified in the methanolic extracts of B. sacra and B. serrata.
| Compounds | RT (min) | [M − H]−(m/z) | Ions (m/z) | Occurrence in | ||
|---|---|---|---|---|---|---|
| B. sacra | B. serrata | |||||
| 1 | 11-Keto-Ursolic acid | 24 | 469 | 451, 407, 391 | x | x |
| 2 | 11-Keto-β-boswellic acid | 25.8 | 469 | 451, 407, 391 | x | x |
| 3 | 3-O-Acetyl-11-keto-β-Boswellic Acid | 28.8 | 511 | 451, 361 | x | x |
| 4 | 3-α-Hydroxy-7,24-dien-tirucallic acid | 34.5 | 455 | 453, 437, 373 | x | |
| 5 | 3-α-Hydroxy-8,24-dien-tirucallic acid | 36.5 | 455 | 453, 437, 373 | x | x |
| 6 | 3-β-Hydroxy-7,24-dien-tirucallic acid | 39.4 | 455 | 453, 437, 373 | x | |
| 7 | 3-O-Acetyl-oleanolic acid | 41 | 497 | 479, 437 | x | x |
| 8 | Lupeolic acid | 41.6 | 455 | 437, 409 | x | |
| 9 | 3-O-Acetyl-ursolic acid | 43.3 | 497 | 479, 437 | x | x |
| 10 | α-Boswellic acid | 44.5 | 455 | 437, 409, 377 | x | x |
| 11 | β-Boswellic acid | 45 | 455 | 437, 409, 377 | x | x |
| 12 | 3-O-Acetyl-α-boswellic acid | 52 | 497 | 459, 437 | x | x |
| 13 | 3-O-Acetyl-β-boswellic acid | 52.9 | 497 | 459, 437, 395 | x | x |