Table 1.
Compounds identified from E. ebracteolata.
| No. | Retention time (min) | [M+H]+ (m/z) | Formula | HPLC/ESI-MS2m/z (% base peak) | Identification |
|---|---|---|---|---|---|
| 1 | 9.54 | 197.0803 | C10H12O4 | 197→179(86), 151(100), 133(35), 95(22), 67(12) | 2,4-dihydroxy-6-methoxy-3-methylacetophenone [10] |
| 2 | 11.32 | 351.2162 | C20H30O5 | 351→333(21), 297(100), 269(60), 177(42), 123(22), 69(21) | Yuexiandujisu D [11] |
| 3 | 12.94 | 351.2163 | C20H30O5 | 351→333(100), 297(27), 269(25), 177(41), 123(26), 69(31) | Ebracteolatanolide B [12] or Yuexiandujisu E [11] |
| 4 | 15.44 | 333.2068 | C20H28O4 | 333→315(66), 287(100), 269(34), 123(23), 69(19) | Ebracteolatanolide A [12] |
| 5 | 16.69 | 305.2472 | C20H32O2 | 305→269(26), 171(49), 143(64), 119(100), 69(52) | Yuexiandujisu F [11] |
| 6 | 21.37 | 317.2117 | C20H28O3 | 317→299(48), 175(61), 137(100), 81(31), 69(17) | Yuexiandajisu C [5] |
| 7 | 21.72 | 319.2245 | C20H30O3 | 319→279(24), 137(16), 95(96), 81(100), 67(79) | Yuexiandajisu A [4] |
| 8 | 23.40 | 391.1391 | C20H22O8 | 391→195(4), 177(87), 121(64), 91(100), 77(85) | 2,2′,4,4′-tetrahydroxy-6,6′-dimethoxy -3,3′-dimethyl-7,5′- bisacetophenone [13] |
| 9 | 23.59 | 331.1902 | C20H26O4 | 331→313(13), 193(13), 165(100), 95(48), 69(25) | Jolkinolide B [14] |
| 10 | 24.68 | 377.1224 | C19H20O8 | 377→177(87), 149(46), 121(65), 91(100), 77(94) | 3,3′-diacetyl-4, 4′-dimethoxy-2,2′,6,6′ -tetrahydroxydiphenylmethane [13] |
| 11 | 27.86 | 315.1953 | C20H26O3 | 315→177(85), 121(25), 95(100), 69(67), 55(37) | Jolkinolide A [14] |
| 12 | 34.27 | 301.2157 | C20H28O2 | 301→177(14), 163(100), 117(40), 69(45) | Jolkinolide E [3] |