作者:Tatiana Cañeque、Filipe Gomes、Trang Thi Mai、Giovanni Maestri、Max Malacria、Raphaël Rodriguez
DOI:10.1038/nchem.2302
日期:2015.9
exhibit antiproliferative properties and have been proposed to operate via similar mechanisms, including direct genome targeting. Here, we report the chemical synthesis of marmycin A and the study of its cellular activity. The aromatic core was constructed by means of a one-pot multistep reaction comprising a regioselective Diels–Alder cycloaddition, and the complex sugar backbone was introduced through
蒽环类药物如多柔比星广泛用于治疗癌症。蒽醌相关的角环素也表现出抗增殖特性,并且已被提议通过类似的机制起作用,包括直接基因组靶向。在这里,我们报告了marmycin A 的化学合成及其细胞活性的研究。芳香核心是通过包含区域选择性 Diels-Alder 环加成的一锅多步反应构建的,并通过铜催化的 Ullmann 交叉偶联引入复杂的糖骨架,然后进行具有挑战性的 Friedel-Crafts 环化。值得注意的是,荧光显微镜显示马霉素 A 不靶向细胞核,而是在溶酶体中积累,从而促进细胞死亡,而与基因组靶向无关。此外,marmycin A 和溶酶体靶向剂青蒿琥酯的合成二聚体对侵袭性 MDA-MB-231 癌细胞系表现出协同活性。这些发现揭示了蒽醌衍生物在细胞中作用的难以捉摸的途径,指向了意想不到的生物学和治疗应用。