Iromycins from Streptomyces sp. and from synthesis: New inhibitors of the mitochondrial electron transport chain
作者:Frank Surup、Heydar Shojaei、Paultheo von Zezschwitz、Brigitte Kunze、Stephanie Grond
DOI:10.1016/j.bmc.2007.11.023
日期:2008.2.15
(NADH-ubiquinone oxidoreductase). Derivatives of the naturalproducts were semisynthetically prepared and provided detailed insights into structure-activity relationships. Drawn from these results, there are strong similarities with the piericidins, which are among the most potent complex I inhibitors of the mitochondrial electron transport chain. Furthermore, totalsynthesis afforded new analogues, and the non-natural
从菌株Streptomyces sp。的培养物中分离出两种新的α-吡啶酮代谢物,伊洛霉素E和F。Dra 17,从而扩大了最近发现的伊霉素家族。检查了线粒体呼吸链的抑制潜力,发现伊霉素代谢物以不同的功效阻断牛肉心线粒体颗粒中的NADH氧化,但仅显示出非常低的细胞毒性。差异光谱研究表明,伊霉素抑制了复合物I(NADH-泛醌氧化还原酶)位点的电子转运。天然产物的衍生物是半合成制备的,并提供了对结构-活性关系的详细见解。从这些结果中可以得出,它们与菜青素有很强的相似性,它们是最有效的线粒体电子传输链复合物I抑制剂之一。此外,全合成提供了新的类似物,非天然伊霉素S(IC50 = 58 ng / mL)成为活性最高的化合物,因此,开创了将伊霉素作为新的有价值的生化工具的途径。