Discovery of cytochrome bc<sub>1</sub> complex inhibitors inspired by the natural product karrikinolide
作者:Cheng Chen、Qiong-You Wu、Lian-Ying Shan、Bei Zhang、Francis Verpoort、Guang-Fu Yang
DOI:10.1039/c6ra19424a
日期:——
antibiotics and fungicides. With an aim to indentify new lead structures for the bc1 complex, a series of novel inhibitors were discovered from the natural product karrikinolide for the first time. Extensive screening results suggested variable inhibitory activities of these compounds against succinate-cytochrome reductase [SCR, a mixture of respiratory complex II (SQR) and complex III (the bc1 complex)], implying
细胞色素bc 1复合物(cyt bc 1或复合物III)是许多抗生素和杀真菌剂的有希望的靶标。为了确定bc 1复合物的新的先导结构,首次从天然产物karrikinolide中发现了一系列新型抑制剂。广泛的筛选结果表明,这些化合物对琥珀酸-细胞色素还原酶[SCR,呼吸道复合物II(SQR)和复合物III(bc 1复合物)的混合物]具有不同的抑制活性,这表明4-取代的苯基对于高效力。化合物12g的抑制作用极佳,IC 50为50值在亚微摩尔范围内,表明其效价比市售对照羊膜蛋白高两个数量级。进一步的实验推断这些新制备的化合物主要靶向bc 1复合物。看来,这项工作提出了一种新的铅支架,用于进一步开发bc 1复合抑制剂。