Chemical Constituents of the Seeds of Quercus wutaishanica
A new hydrolysable tannin, ethyl castavaloninate ( 1 ), was isolated from the seeds of Quercus wutaishanica, along with nine known compounds, γ-tocopherol ( 2 ), ethyl brevifolincarboxylate ( 3 ), brevifolin ( 4 ), (–)-7,7′-dioxodihydroguaiaretic acid ( 5 ), (–)-pinoresinol ( 6 ), (–)-dihydrodehydro...
Gespeichert in:
| Veröffentlicht in: | Chemistry of natural compounds 2021-07, Vol.57 (4), p.650-653 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | A new hydrolysable tannin, ethyl castavaloninate (
1
), was isolated from the seeds of
Quercus wutaishanica,
along with nine known compounds, γ-tocopherol (
2
), ethyl brevifolincarboxylate (
3
), brevifolin (
4
), (–)-7,7′-dioxodihydroguaiaretic acid (
5
), (–)-pinoresinol (
6
), (–)-dihydrodehydrodiconiferyl alcohol (
7
), (+)-isolariciresinol (
8
), decarboxylated ellagic acid (
9
), and ellagic acid 4-O-xylopyranoside (
10
). The structure of
1
was determined by spectroscopic methods, including NMR, HR-ESI-MS, and IR spectra. This is the first report of compounds
2–10
from the genus
Quercus. |
|---|---|
| ISSN: | 0009-3130 1573-8388 |
| DOI: | 10.1007/s10600-021-03442-7 |