Table 1.
Main saponins annotated in the A. amazonicus aqueous and ethanol bark extracts.
| Compound | Rt (min) |
[M-H]− m/z |
Molecular Formula |
MS2 | Aglycone | Sugar Residue a |
|---|---|---|---|---|---|---|
| 1 | 13.6 | 959.4 | C48H80O19 | 941 (-H2O), 817 (-C8H14O2), 797 (-Hex), 779 (-H2O-Hex), 655 (-C8H14O2-Hex), 509 (-C8H1402-Hex-dHex) |
16-keto-tetrahydroxydammar-23-ene | 2Hex, 1dHex |
| 2 | 15.0 | 973.3 | C49H82O19 | 913 (-C2H4O2), 841 (-Pen), 811 (-Hex), 781 (-C2H4O2-Pen), 751 (C2H4O2-Pen), 619 (C2H4O2-Pen-Hex) |
konarigenin | 2Hex, 1Pen |
| 3 | 16.6 | 943.4 | C48H80O18 | 811 (-Pen), 781 (-Hex), 763 (-H2O-Hex), 649 (’Hex-Pen), 479 (-C9H16O2-Hex-d-Hex), 347 (-C9H16O2-Hex-dHex-Pen) |
16-keto-tetrahydroxydammar-24-methylene | 1Hex, 1dHex, 1Pen |
| 4 | 17.0 | 957.3 | C49H82O18 | 801 (-C9H16O2) 811 (-dHex), 795 (-Hex), 649 (-Hex-dHex) |
16-keto-tetrahydroxydammar-24-methylene | 2dHex, 1Hex |
| 5 | 18.9 | 1059.3 | C52H84O22 | 927 (-Pen), 897 (-Hex), 879 (-H2O-hex), 756 (-Hex-Pen), 735 (-2Hex), 603 (-2Hex-Pen), 453 (-H2O-2Hex-2Pen) |
jujubogenin | 2Hex, 2Pen |
| 6 | 20.7 | 897.5 | C46H74O17 | 765 (-Pen), 735 (-Hex), 603 (-Pen-Hex), 471 (-Hex-2Pen) |
jujubogenin | 1Hex, 2Pen |
a: Hex: hexose; dHex: deoxyhexose; Pen: pentose (sugar residues attached to the aglycone skeleton).