Anibamine and Its Analogues: Potent Antiplasmodial Agents from <i>Aniba citrifolia</i>
作者:Yongle Du、Ana Lisa Valenciano、Yumin Dai、Yi Zheng、Feng Zhang、Yan Zhang、Jason Clement、Michael Goetz、David G. I. Kingston、Maria B. Cassera
DOI:10.1021/acs.jnatprod.9b00724
日期:2020.3.27
In our continuing search for novel natural products with antiplasmodial activity, an extract of Aniba citrifolia was found to have good activity, with an IC50 value less than 1.25 μg/mL. After bioassay-directed fractionation, the known indolizinium alkaloid anibamine (1) and the new indolizinium alkaloid anibamine B (2) were isolated as the major bioactive constituents, with antiplasmodial IC50 values
在我们不断寻找具有抗疟原虫活性的新型天然产物的过程中,发现柑橘属植物提取物具有良好的活性,其 IC 50值小于 1.25 μg/mL。经过生物测定定向分离,已知的茚茚生物碱anibamine ( 1 )和新的茚茚生物碱anibamine B( 2 )作为主要生物活性成分被分离出来,抗疟原虫的IC 50值分别为0.170和0.244 μM,对耐药Dd2菌株恶性疟原虫。新香豆素类生物素 A ( 3 )、新的降木脂素 anibignan A ( 5 ) 和六种已知的新木脂素( 7 – 12 )) 也得到了。所有分离出的化合物的结构均基于 1D 和 2D NMR 光谱和质谱数据的分析确定,并从其 ECD 谱中确定了苯丙胺 A ( 5 )的绝对构型。对 28 个阿尼巴胺类似物 ( 13 – 40 )库的评估表明,带四元电荷的类似物的 IC 50值低至 58 nM,而不带电荷的类似物则没有活性或活性显