Total synthesis and cytotoxicity of the marine natural product malevamide D and a photoreactive analog
作者:Werner Telle、Gerhard Kelter、Heinz-Herbert Fiebig、Peter G Jones、Thomas Lindel
DOI:10.3762/bjoc.10.29
日期:——
The marine natural product malevamide D from the cyanobacterium Symploca hydnoides was synthesized for the first time. The final peptide coupling linked the dolaisoleuine and dolaproine subunits. The phenyl group of malevamide D was also functionalized with a photoreactive diazirine moiety, which was carried through seven reaction steps. Comprehensive assessment of the cytotoxicity in a panel of 42
首次合成了来自蓝藻 Symploca hydnoides 的海洋天然产物马来酰胺 D。最后的肽偶联连接了多拉索赖氨酸和多拉普林亚基。马来酰胺 D 的苯基也被光反应性二氮丙啶部分官能化,该部分通过七个反应步骤进行。对一组 42 种人类癌细胞系的细胞毒性的综合评估显示,马来酰胺 D 的几何平均 IC70 值为 1.5 nM(IC50 为 0.7 nM),而光反应性衍生物的活性至少降低了 200 倍。 比较分析表明微管蛋白相互作用可能是马来酰胺 D 的作用方式。