A new gnidiflavanone-flavonol dimer and other constituents from <i>Gnidia apiculata</i>
作者:Rahab W. Kamau、Veronica M. Masila、Jacob O. Midiwo、Quintino A. Mgani、Mallika Kumarihamy、Mei Wang、Jianping Zhao、Ilias Muhammad
DOI:10.1080/14786419.2022.2062349
日期:2023.10.2
new 3,8′′-flavanone-flavonol dimer gnidiflavanone-flavonol (1) and 10 known compounds (2–11), including four rare primula-type flavones 2–5, were isolated from the roots of Gnidia apiculata. Compounds 2–5 and 7 were reported for the first time from the plant family Thymelaeceae. Structures of the isolated compounds were established by spectroscopic data, including 1D and 2D NMR (COSY, HMBC, HSQC and
摘要 从Gnidia apiculata根中分离得到一种新的3,8''-黄烷酮-黄酮醇二聚体gnidiflavanone-flavonol ( 1 ) 和10 种已知化合物( 2 – 11 ),其中包括4 种罕见的报春花型黄酮2 – 5。化合物2-5和7是首次从瑞香科植物中报道。通过光谱数据,包括一维和二维核磁共振(COSY、HMBC、HSQC 和 ROESY)和质谱,以及与文献数据的比较,确定了分离化合物的结构。对粗根提取物和分离化合物的抗菌和抗疟原虫活性进行了评估。在分离的化合物中,6-羟基黄酮 ( 4 ) 和 6- O-乙酰黄酮 ( 4a ) 对氯喹敏感 (D6) 和氯喹抗性 (W2) 恶性疟原虫菌株表现出抗疟原虫活性。