Quílez Del Moral José Francisco, Pérez Álvaro, Navarro María José Segura, Galisteo Alberto, Gonzalez-Coloma Azucena, Andrés María Fe, Barrero Alejandro F
Department of Organic Chemistry, Institute of Biotechnology, University of Granada, 18071 Granada, Spain.
Institute of Agricultural Sciences, CSIC, 28006 Madrid, Spain.
Plants (Basel). 2021 May 12;10(5):959. doi: 10.3390/plants10050959.
Cardenolide-free extracts from showed significant antifeedant effects against the aphid and this activity correlated with their phenylethanoid content. The content in phenylethanoids of has been studied. Maceration of the aerial parts of was used for the selective extraction of the natural compound rengyolone () and the aglycone of cornoside (compound ). Pure rengyolone () can be obtained from in approximately 90% purity from fresh plant from the CHCl soluble fraction of the ethanolic extract (0.8% yield). The ethanol extraction of freshly collected showed the presence of compound as the only phenylethanoid. Compound was proven to easily evolve to rengyolone. Due to this instability, and although its presence in plants has been previously reported, the spectroscopical data of are reported herein for the first time. Selective mono-acetylation of compound of led to the active natural compound hallerone (). The aphid antifeedant (against ) and nematicidal (against root-knot nematode ) activities of these compounds have been evaluated. Here we report for the first time on the aphid antifeedant effects of , , and . Additionally, the nematicidal activity of hallerone () is described here for the first time.
[植物名称]的无强心甾醇提取物对蚜虫表现出显著的拒食作用，且这种活性与它们的苯乙醇含量相关。[植物名称]中苯乙醇的含量已被研究。采用[植物名称]地上部分的浸渍法选择性提取天然化合物伦吉洛酮（[化合物名称]）和山茱萸苷元（化合物[具体编号]）。从[植物名称]的新鲜植物中，通过乙醇提取物的氯仿可溶部分，能以约90%的纯度获得纯伦吉洛酮（[化合物名称]）（产率0.8%）。对新鲜采集的[植物名称]进行乙醇提取，结果显示仅存在化合物[具体编号]这一种苯乙醇。已证实化合物[具体编号]很容易转化为伦吉洛酮。由于这种不稳定性，尽管其在植物中的存在此前已有报道，但本文首次报道了化合物[具体编号]的光谱数据。[植物名称]化合物[具体编号]的选择性单乙酰化产生了活性天然化合物哈勒酮（[化合物名称]）。已评估了这些化合物对蚜虫的拒食活性（针对[蚜虫名称]）和杀线虫活性（针对根结线虫[线虫名称]）。在此，我们首次报道了[化合物名称]、[化合物名称]和[化合物名称]对蚜虫的拒食作用。此外，本文首次描述了哈勒酮（[化合物名称]）的杀线虫活性。
