The present invention relates to antimalarial compounds. More specifically, the present invention relates to novel substituted quinolone derivatives of formula (I) and related quinoline derivatives of formula (II) as defined herein that possess potent antimalarial activity. The present invention also relates to processes for the preparation of these quinolone and quinoline derivatives, to pharmaceutical compositions comprising them and to their use as therapeutic agents for the treatment and/or prevention of malaria.
作者:W. David Hong、Suet C. Leung、Kangsa Amporndanai、Jill Davies、Richard S. Priestley、Gemma L. Nixon、Neil G. Berry、S. Samar Hasnain、Svetlana Antonyuk、Stephen A. Ward、Giancarlo A. Biagini、Paul M. O’Neill
DOI:10.1021/acsmedchemlett.8b00371
日期:2018.12.13
A series of 2-pyrazolyl quinolones has been designed and synthesized in 5-7 steps to optimize for both in vitro antimalarial potency and various in vitro drug metabolism and pharmacokinetics (DMPK) features. The most potent compounds display no cross-resistance with multidrug resistant parasite strains (W2) compared to drug sensitive strains (3D7), with IC50 (concentration of drug required to achieve
Antituberculosis Activity of the Antimalaria Cytochrome <i>bcc</i> Oxidase Inhibitor SCR0911
作者:Shi Min Sherilyn Chong、Malathy Sony Subramanian Manimekalai、Jickky Palmae Sarathy、Zoe C. Williams、Liam K. Harold、Gregory M. Cook、Thomas Dick、Kevin Pethe、Roderick W. Bates、Gerhard Grüber
DOI:10.1021/acsinfecdis.9b00408
日期:2020.4.10
The ability to respire and generate adenosinetriphosphate (ATP) is essential for the physiology, persistence, and pathogenicity of Mycobacterium tuberculosis, which causes tuberculosis. By employing a lead repurposing strategy, the malarial cytochrome bc1 inhibitor SCR0911 was tested against mycobacteria. Docking studies were carried out to reveal potential binding and to understand the binding interactions
Combination of respiratory electron transport chain inhibitors with a cytochrome bd inhibitor
申请人:Liverpool School of Tropical Medicine
公开号:US10799494B2
公开(公告)日:2020-10-13
The present invention relates to a combination therapeutic product comprising one or more respiratory electron transport chain inhibitors and a cytochrome bd inhibitor, as defined herein, or a pharmaceutically acceptable salt thereof. The present invention also relates to pharmaceutical compositions comprising the combination therapeutic product and to the use of the combination therapeutic product in the treatment of mycobacterial infections, such as tuberculosis.
Rational Design, Synthesis, and Biological Evaluation of Heterocyclic Quinolones Targeting the Respiratory Chain of <i>Mycobacterium tuberculosis</i>
作者:W. David Hong、Peter D. Gibbons、Suet C. Leung、Richard Amewu、Paul A. Stocks、Andrew Stachulski、Pedro Horta、Maria L. S. Cristiano、Alison E. Shone、Darren Moss、Alison Ardrey、Raman Sharma、Ashley J. Warman、Paul T. P. Bedingfield、Nicholas E. Fisher、Ghaith Aljayyoussi、Sally Mead、Maxine Caws、Neil G. Berry、Stephen A. Ward、Giancarlo A. Biagini、Paul M. O’Neill、Gemma L. Nixon
DOI:10.1021/acs.jmedchem.6b01718
日期:2017.5.11
A high-throughput screen (HTS) was undertaken against the respiratory chain dehydrogenase component, NADH:menaquinone oxidoreductase (Ndh) of Mycobacterium tuberculosis (Mtb). The 11000 compounds were selected for the HTS based on the known phenothiazine Ndh inhibitors, trifluoperazine and thioridazine. Combined HTS (11000 compounds) and in-house screening of a limited number of quinolones (50 compounds) identified similar to 100 hits and four distinct chemotypes, the most promising of which contained the quinolone core. Subsequent Mtb screening of the complete in-house quinolone library (350 compounds) identified a further similar to 90 hits across three quinolone subtemplates. Quinolones containing the amine-based side chain were selected as the pharmacophore for further modification, resulting in metabolically stable quinolones effective against multi drug resistant (MDR) Mtb. The lead compound, 42a (MTC420), displays acceptable antituberculosis activity (Mtb IC50 = 525 nM, Mtb Wayne IC50 = 76 nM, and MDR Mtb patient isolates IC50 = 140 nM) and favorable pharmacokinetic and toxicological profiles.