Discovery and Total Synthesis of Natural Cystobactamid Derivatives with Superior Activity against Gram‐Negative Pathogens
作者:Stephan Hüttel、Giambattista Testolin、Jennifer Herrmann、Therese Planke、Franziska Gille、Maria Moreno、Marc Stadler、Mark Brönstrup、Andreas Kirschning、Rolf Müller
DOI:10.1002/anie.201705913
日期:2017.10.2
isolates of Klebsiella oxytoca, Pseudomonas aeruginosa, and fluoroquinolone‐resistant Enterobacteriaceae, which were not observed for previously reported cystobactamids. Our findings provide structure–activity relationships and show how pathogen resistance can be overcome by natural scaffold diversity. The most promising derivative 861‐2 was prepared by total synthesis, enabling further chemical optimization
抗生素的发现和开发具有挑战性,因为合成来源的化学支架常常缺乏所需的药物特性,而从天然来源中发现新的化学支架则是乏味的。在本文中,我们报告了在对粘细菌生产菌株的详细筛选中发现了具有显着改善的抗菌特性的新的半胱氨酸酰胺。这些新衍生物中的一些在低μgmL -1中显示出抗菌活性可抵抗革兰氏阴性病原体,包括产酸克雷伯菌,铜绿假单胞菌和对氟喹诺酮类耐药的肠杆菌科的临床分离株,以前报道的囊形内酰胺酶未见到。我们的发现提供了构效关系,并显示了天然支架的多样性如何克服病原体的抗性。最有前途的衍生物861-2是通过全合成制备的,从而可以对该特殊支架进行进一步的化学优化。