Table 2.
Phenolic acids, tremetones, terpenoids and flavonoids identified in Parastrephia lucida by UHPLC- HR-OT-MS.
| Peak | Tentative compound | Type of compound | tR (min) | Theoretical mass [M−H]− | Accurate mass [M−H]− | Fragments (m/z) | Molecular formula |
|---|---|---|---|---|---|---|---|
| 1 | Quinic acid | Phenolic acid | 1.39 | 191.05611 | 191.05578 | 129.01855 | C7H11O6− |
| 2 | 2,4,5,6,7-Pentahydroxypentanoic acid | Organic acid | 1.50 | 209.06668 | 209.06636 | 191.05553 | C7H13O7− |
| 3 | 2,4,5,6-Tetrahydroxyhexanoic acid | Organic acid | 8.72 | 195.05103 | 195.05061 | 113.02354 | C6H11O7− |
| 4 | Chlorogenic acid | Phenolic acid | 9.46 | 353.08781 | 353.08798 | 191.05562 | C16H17O9− |
| 5 | Aesculetin | Cumarin | 9.95 | 177.01933 | 177.01897 | 133.02879 | C9H5O4− |
| 6 | 8-Hydroxy-7-methoxy-scopoletin | Coumarin | 10.53 | 211.04555 | 221.04524 | 119.04939 | C11H9O5− |
| 7 | Caffeic acid− | Phenolic acid | 11.02 | 179.03498 | 179.03456 | 135.0443 | C9H7O4− |
| 8 | 7-Methoxy-8-hydroxyesculetin | Cumarine | 11.47 | 207.02990 | 207.02959 | 192.00610 | C10H7O5− |
| 9 | p-Coumaric acid | Phenolic acid | 11.61 | 163.04007 | 163.03954 | 119.04944 | C9H7O3− |
| 10 | 7-Methoxyesculetin | Coumarin | 12.70 | 191.03498 | 191.03464 | 119.04939 | C10H7O4− |
| 11 | Dicaffeoylquinic acid* | Phenolic acid | 13.32 | 515.11950 | 515.11957 | 191.05565 | C25H23O12− |
| 12 | Luteolin 7-O-glucoside | Flavone | 13.71 | 447.09332 | 447.09344 | 285.04053 | C21H19O11− |
| 13 | 7-Methoxymyricetin | Flavonol | 14.03 | 331.04594 | 331.04611 | 271.04451 | C16H11O8− |
| 14 | 4-Hydroxy-3-methoxyacetophenone | Acetophenone | 14.34 | 165.05572 | 165.05524 | 119.04949 | C9H9O3− |
| 15 | Kaempferol* | Flavonol | 14.82 | 285.04046 | 285.04056 | 213.05513 | C15H9O6− |
| 16 | Isorhamnetin* | Flavonol | 15.00 | 315.05103 | 315.05121 | 192.00565 | C16H11O7− |
| 17 | 4-Hydroxy-3-methoxypropiophenone | Propiophenone | 16.42 | 179.07137 | 179.07103 | 135.04442 | C10H11O3− |
| 18 | Luteolin* | Flavone | 16.72 | 285.04046 | 285.04050 | 175.03940 | C15H9O6− |
| 19 | Apigenin* | Flavone | 18.00 | 269.0455 | 269.04550 | 117.03374 | C15H9O5− |
| 20 | Quercetin* | Flavonol | 18.52 | 301.03538 | 301.03549 | 213.05513 | C15H9O7− |
| 21 | 3′,7-Dimethoxymyricetin | Flavonol | 19.32 | 345.06159 | 345.06171 | 119.04948 | C17H13O8− |
| 22 | 3,7-Dimethoxymyricetin | Flavonol | 19.46 | 345.06159 | 345.06183 | 315.01508 | C17H13O8− |
| 23 | 7-Methoxyquercetin | Flavonol | 19.82 | 315.05103 | 315.05112 | 271.02490 | C16H11O7− |
| 24 | 7-Methoxyluteolin | Flavone | 20.32 | 299.05611 | 299.05618 | 284.03241 | C16H11O6− |
| 25 | Naringenin* | Flavanone | 20.43 | 271.06120 | 271.06122 | 119.04939 | C15H11O5− |
| 26 | 3′-Methoxyquercetin | Flavonol | 20.76 | 315.05103 | 315.05106 | 135.04439 | C16H11O7− |
| 27 | 7,3′-Dimethoxyquercetin | Flavonol | 21.32 | 329.06668 | 329.06680 | 299.0156 | C17H13O7− |
| 28 | 7,3′,5′-Trimethoxymyricetin | Flavonol | 21.86 | 359.07724 | 359.07742 | 117.03375 | C18H15O8− |
| 29 | Dehydro-6,7-dimethoxytremetone | Tremetone | 22.01 | 263.12888 | 263.12878 | - | C15H19O9− |
| 30 | 3′-Methoxyluteolin | Flavone | 22.43 | 299.05611 | 299.05618 | 119.04939 | C16H11O6− |
| 31 | 7,3′-Dimethoxyluteolin | Flavone | 23.54 | 313.07176 | 313.07181 | 119.04943 | C17H13O6− |
| 32 | 6-Hydroxy-7-methoxytremetone | Tremetone | 23.86 | 247.09758 | 247.09743 | 135.04442 | C14H15O4− |
| 33 | 7-Methoxyapigenin | Flavone | 24.45 | 283.06120 | 283.06125 | 268.03760 | C16H11O5− |
| 34 | 19-Acetyl-1,2-dihydroxy-hawtriwaic acid methyl ester | Diterpenoid | 24.86 | 419.20753 | 419.20767 | 375.21777 | C23H31O7− |
| 35 | p-Coumaroyoxyltremetone* | Tremetone | 25.28 | 363.12380 | 363.12393 | 117.03377 | C22H19O5− |
| 36 | Dehidro-6-hydroxy-7-methoxytremetone | Tremetone | 25.83 | 249.11323 | 249.11305 | 161.02376 | C14H17O4− |
| 37 | 7-Methoxy-p-coumaroyltremetone | Tremetone | 25.92 | 393.13436 | 393.13458 | 117.03377 | C23H21O6− |
| 38 | 19-Hydroxy-solidagoiol A acetate | Diterpene | 26.54 | 359.22278 | 359.22293 | 119.04939 | C22H31O5− |
| 39 | 19-Acetyl-3-O-methoxy-hawtriwaic acid methyl ester | Diterpene | 27.49 | 375.21770 | 375.21777 | – | C22H31O4− |
| 40 | Dehidro-19-acetyl-hawtriwaic acid methyl ester | Diterpene | 28.00 | 389.23335 | 389.23352 | – | C22H31O4− |
| 41 | Umbelliferone* | Cumarin | 28.43 | 162.0316 | 162.0318 | – | C9H6O3− |
| 42 | Bacchalineol A* | Diterpene | 29.12 | 302.2240 | 302.2245 | – | C20H30O2− |
*
Analytes confirmed by chromatographic comparison with pure standards.