Abstract
A new pyranoxanthone, membraxanthone A (1) has been isolated from the ethanol extract of the stem of Calophyllum membranaceum, together with three known pyranoxanthones, nigrolineaxanthone W (2), calophinone (3) and caloxanthone I (4), and three known triterpenoids, friedelin (5), canophyllol (6) and canophyllic acid (7). Their structures were elucidated on the basis of chemical evidence and intensive spectroscopic analysis including HRESI-MS, 1D- and 2D-NMR. All of the compounds were isolated from this plant for the first time. These xanthones showed no activities towards human cancer cell lines KB, BC-1 and NCI-4460.
| Original language | English |
|---|---|
| Pages (from-to) | 249-254 |
| Number of pages | 6 |
| Journal | Arkivoc |
| Volume | 2008 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - 17 Jul 2008 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Research Keywords
- Calophyllum membranaceum
- Guttiferae
- Membraxanthone A
- Pyranoxanthones
- Triterpenoids
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