Total Synthesis and Biological Assessment of Novel Albicidins Discovered by Mass Spectrometric Networking
作者:Leonard von Eckardstein、Daniel Petras、Tam Dang、Stéphane Cociancich、Souhir Sabri、Stefan Grätz、Dennis Kerwat、Maria Seidel、Alexander Pesic、Pieter C. Dorrestein、Monique Royer、John B. Weston、Roderich D. Süssmuth
DOI:10.1002/chem.201704074
日期:2017.11.2
tandem mass spectrometry and spectral (molecular) networking for the discovery of novel antimicrobial compounds. We report eight new natural albicidin derivatives, four of which bear a β‐methoxy cyanoalanine or β‐methoxy asparagine as the central α‐amino acid. We present the total synthesis of these albicidins, which facilitated the unambiguous determination of the (2 S,3 R)‐stereoconfiguration which is
天然产物代表了潜在的新型抗菌药物线索的重要来源。细胞培养中微生物的低产量通常会延迟结构阐明,甚至阻止及时发现。从Xanthomonas albilineans生产的抗革兰氏阴性抗菌化合物albicidin开始,我们描述了一种结合非靶向串联质谱和光谱(分子)网络的生物活性指导方法,用于发现新型抗菌化合物。我们报告了八种新的天然白蜡菌素衍生物,其中四个以β-甲氧基氰丙氨酸或β-甲氧基天冬酰胺为中心α-氨基酸。我们介绍了这些阿比特霉素的总合成,这有助于(2 S,3 R)-立体构型,并通过对抗菌活性的立体化学评估进行补充。