Norepinephrine alkaloids as antiplasmodial agents: Synthesis of syncarpamide and insight into the structure-activity relationships of its analogues as antiplasmodial agents
作者:Eswar K. Aratikatla、Tushar R. Valkute、Sunil K. Puri、Kumkum Srivastava、Asish K. Bhattacharya
DOI:10.1016/j.ejmech.2017.07.052
日期:2017.9
exhibited antiplasmodial activities with IC50 values of 6.39, 6.82, 6.41 μM against 3D7 strain, 4.27, 7.26, 2.71 μM against K1 strain and with CC50 values of 147.72, 153.0, >200 μM respectively. The in vitro antiplasmodial activity data of synthesized library suggests that the electron density and possibility of resonance in both the ester and amide side chains increases the antiplasmodial activity as compared
Syncarpamide 1,一种从花椒(芸苔科)的叶中分离出的去甲肾上腺素生物碱,对恶性疟原虫表现出有希望的抗疟原虫活性,据报道其IC 50值为2.04μM(D6克隆),3.06μM(W2克隆),并由我们观察到3.90μM(3D7)克隆)和2.56μM(K1克隆)。在我们继续研究天然存在的抗疟疾化合物方面,已经完成了使用Sharpless不对称二羟基化反应为关键步骤合成syncarpamide 1及其对映异构体(R)-2。为了详细研究结构-活性-关系(SAR),建立了55种化合物的库(3 – 57通过改变芳环上的取代基,通过改变C-7上的立体中心和/或通过改变酯和/或酰胺侧链上的酸基来合成辛巴酰胺1的类似物/同系物。天然产物先导分子,并进一步在体外针对恶性疟原虫的3D7和K1菌株进行分析,以评估其抗疟原虫活性。为了研究对抗疟原虫活性谱的官能团的位置的效果,区域异构体(小号) - 58 s