| Autor: |
Bannon, CD, Eade, RA, Simes, JJH |
| Zdroj: |
Australian Journal of Chemistry; 1976, Vol. 29 Issue: 5 p1135-1141, 7p |
| Abstrakt: |
Extraction of the wood of Eugenia crebrinervis has yielded ellagic acid and a triterpenoid fraction composed of a 1 : 1 mixture of asiatic acid and arjunolic acid. Extraction of the wood of Eugenia gustavioides has given a mixture of triterpenoid acids (2.7 % of the dry weight of the wood) of which crategolic acid (c.1%) is the principal constituent; other major constituents are asiatic acid and arjunolic acid, while oleanolic acid, ursolic acid and 2α-hydroxyursolic acid are minor constituents.In both Eugenia species the α-amyrin component occurs with the corresponding β-amyrin analogue giving a mixture separable only with difficulty; use has been made of the previously described chlorination procedure1 to enable comparatively easy isolation of the α-amyrin component. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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