A novel pentacyclic triterpene from Leontodon filii
- 作者：Tost脙脙o ; Z脙脙lia ; Noronha ; Jo脙脙o P. ; Cabrita ; Eurico J. ; Medeiros ; Jorge ; Justino ; Jorge ; et. al.
- 关键词：Leontodon filii ; Fungicidal activity ; Triterpenoid ; 2脙脙脙脙 ; 3脙脙脙脙 ; 15脙脙脙脙 ; 21脙脙脙脙-Olean-12-ene-2 ; 3 ; 15 ; 21-tetrol
- 刊名：Fitoterapia
- 出版年：2005
- 期刊代码：35_0367326x
- 类别：ch
- 出版时间：March, 2005
- 卷：76
- 期：2
- 页码：173-180
- 文件大小：103 K
摘要
A novel oleanene triterpenetetrol was isolated from the chloroform extract of the aerial parts of Leontodon filii. Its structure was shown to be 2β,3β,15α,21β-olean-12-ene-2,3,15,21-tetrol by chemical and spectroscopic methods. The fungicidal efficacy of the chloroform and methanol extracts of the plant was also evaluated, a protective effect being found against Plasmopara viticola, Botrytis cinerea, particularly powerful against Pyricularia oryzae.