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 malevamideDfrom the cyanobacteriumSymplocahydnoides was synthesized for the first time. The final peptide coupling linked the dolaisoleuine and dolaproine subunits. The phenyl group of malevamideD 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。