[structure: see text]. A highly convergent protocol to cyclopeptide alkaloids, as demonstrated by the first total synthesis of antiplasmodial agent ziziphine N, is developed. The key elements include construction of its aryl ether unit via Mitsunobu reaction, installation of its enamide part via CuI/N,N-dimethylglycine-catalyzed coupling reaction, and ring closure with coupling agents such as FDDP
[结构:见文字]。已开发出一种高度收敛的环肽
生物碱方案,如抗疟原虫药物齐齐宁N的第一个全合成所证明的那样。关键要素包括通过Mitsunobu反应构建其芳基醚单元,通过CuI / N,N-二甲基甘
氨酸催化的偶联反应安装其酰胺部分,以及使用诸如FDDP和
DPPA的
偶联剂闭环。