Here, we report the synthesis of all major 2-alkyl-4(1H)-quinolone N-oxide classes of Pseudomonas and Burkholderia, quantification of their native production levels and their antibiotic activities against competing Staphylococcus aureus.
Synthesis of Natural and Unnatural Quinolones Inhibiting the Growth and Motility of Bacteria
作者:Jianye Li、Benjamin R. Clark
DOI:10.1021/acs.jnatprod.0c00865
日期:2020.10.23
Synthesis of a recently discovered S-methylated quinolone natural product (1) was carried out, in addition to the production of a range of 2-substituted 4-quinolone derivatives (2–11). Two approaches were used: (i) the base-catalyzed cyclization of N-(ketoaryl)amides; (ii) attachment of the substituent to the quinolone core via a Suzuki–Miyaura cross-coupling. Also produced were a small suite of related
The Synthesis of Quinolone Natural Products from<i>Pseudonocardia</i>sp.
作者:Flavia Salvaggio、James T. Hodgkinson、Laura Carro、Stephen M. Geddis、Warren R. J. D. Galloway、Martin Welch、David R. Spring
DOI:10.1002/ejoc.201501400
日期:2016.1
Abstract The synthesis of four quinolonenaturalproducts from the actinomycete Pseudonocardia sp. is reported. The key step involved a sp2–sp3 Suzuki–Miyaura reaction between a common boronic ester lateral chain and various functionalised quinolone cores. The quinolones slowed growth of E. coli and S. aureus by inducing extended lag phases.
BACKGROUND Farnesylpyrophosphatesynthase (FPPS) is a key regulatory enzyme in the biosynthesis of cholesterol and in the post-translational modification of signaling proteins. It has been reported that non-bisphosphonate FPPS inhibitors targeting its allosteric binding pocket are potentially important for the development of promising anti-cancer drugs. METHODS The following methods were used: organic