Modification of the
<i>Pseudomonas aeruginosa</i>
toxin 2‐heptyl‐1‐hydroxyquinolin‐4(1
<i>H</i>
)‐one and other secondary metabolites by methyltransferases from mycobacteria
range of secondary metabolites, among them the respiratory toxin 2‐heptyl‐1‐hydroxyquinolin‐4(1H)‐one (2‐heptyl‐4‐hydroxyquinoline N‐oxide, HQNO). Cultures of the emerging cystic fibrosis pathogen Mycobacteroides abscessus detoxify HQNO by methylating the N‐hydroxy moiety. In this study, the class I methyltransferase MAB_2834c and its orthologue from Mycobacterium tuberculosis, Rv0560c, were identified
have been prepared. While the synthesis by direct methylation was successful for 3-unsubstituted 2-heptyl-4(1H)-quinolones, methylated derivatives of the Pseudomonas quinolone signal (PQS) were synthesized from 3-iodinated quinolones by methylation and iodine–metal exchange/oxidation. The two N- and O-methylated derivatives of the PQS showed strong quorum sensing activity comparable to that of PQS itself
An Unsaturated Quinolone<i>N</i>-Oxide of<i>Pseudomonas aeruginosa</i>Modulates Growth and Virulence of<i>Staphylococcus aureus</i>
作者:Dávid Szamosvári、Thomas Böttcher
DOI:10.1002/anie.201702944
日期:2017.6.12
which belong to the class of 2‐alkyl‐4‐quinolone N‐oxides (AQNOs) with various chain lengths and degrees of saturation. We present the first synthesis of a previously proposed unsaturated compound that is confirmed to be present in culture extracts of P. aeruginosa, and its structure is shown to be trans‐Δ1‐2‐(non‐1‐enyl)‐4‐quinolone N‐oxide. This compound is the most active agent against S. aureus, including
COMPOUND FOR USE AGAINST PATHOGENIC NEISSERIA AND HAEMOPHILUS SPECIES AND MORAXELLA CATARRHALIS
申请人:Universität Konstanz
公开号:EP3502095A1
公开(公告)日:2019-06-26
The present invention relates to a compound, which can be used in the prevention and treatment of infections with pathogenic Neisseria species, in particular N. gonorrhoeae and N. meningitidis (the gonococcus and the meningococcus, respectively), and other pathogenic bacteria (e.g. Haemophilus species or Moraxella catarrhalis ), and which can be used for disinfecting a substrate from said bacteria. Moreover, the present invention relates to a corresponding pharmaceutical composition comprising said compound.
[EN] IN VITRO METHOD FOR DETECTION OF INFECTIONS CAUSED BY PSEUDOMONAS AERUGINOSA<br/>[FR] PROCÉDÉ IN VITRO DE DÉTECTION D'INFECTIONS PROVOQUÉES PAR PSEUDOMONAS AERUGINOSA
申请人:CONSEJO SUPERIOR INVESTIGACION
公开号:WO2021198064A1
公开(公告)日:2021-10-07
In vitro method for detection of infections caused by pseudomonas aeruginosa. The present invention relates to compounds of general Formula (I) and to their use as haptens. Moreover, the present invention also refers to conjugates comprising the haptens of the invention and to their use for obtaining antibodies. Finally, the invention also relates to an in vitro method for the detection of infections caused by Pseudomonas aeruginosa by means of the identification and/or quantification of the main signaling molecules from the pqs quorum sensing system.