Kaempferol Glycosides from<i>Lobularia maritima</i>and Their Potential Role in Plant Interactions
作者:Antonio Fiorentino、Andreina Ricci、Brigida D'Abrosca、Annunziata Golino、Angelina Izzo、Maria Teresa Pascarella、Simona Piccolella、Assunta Esposito
DOI:10.1002/cbdv.200800097
日期:2009.2
isolated kaempferol derivatives have different disaccharide substituents at C(3) and four of them have a rhamnose unit at C(7). To evaluate their potential allelopathic role within the herbaceous plant community, the compounds, as well as the aglycone obtained from enzymatic hydrolysis, have been tested in vitro on three coexisting plant species, Dactylis hispanica, Petrorhagia velutina, and Phleum subulatum
从海葵叶提取物中分离出六个山奈酚糖苷,其中四个是首次鉴定。通过使用电喷雾电离三重四极杆质谱(ESI / TQ / MS)技术以及1D和2D-NMR实验(1H,13C,DEPT,DQ-COSY,TOCSY,ROESY)的组合方法进行结构阐明,NOESY,HSQC,HMBC和HSQC-TOCSY)。分离的山奈酚衍生物在C(3)处具有不同的二糖取代基,其中四个在C(7)处具有鼠李糖单元。为了评估其在草本植物群落中的潜在化感作用,已在三种共存的植物物种:Dactylis hispanica,Petrorhagia velutina和Phleum subulatum上对化合物以及从酶促水解中获得的糖苷配基进行了体外测试。获得的结果使我们能够假设糖的类型调节了生物反应。通过多变量方法分析的生物测定数据,并根据糖单元的数量和二糖部分中存在的碳水化合物的性质对化合物进行分组,表明其结构与活性之间的关系。