N-Sulfonyl homoserine lactones as antagonists of bacterial quorum sensing
摘要:
A series of 11 new analogues of N-acylhomoserine lactones in which the carboxamide bond was replaced by a sulfonamide one, has been synthesised. These compounds were evaluated for their ability to competitively inhibit the action of 3-oxohexanoyl-L-homoserine lactone, the natural ligand of the quorum sensing transcriptional regulator LuxR, which in turn activates expression of bioluminescence in the model bacterium Vibrio fischeri. Several compounds were found to display antagonist activity. Molecular modeling suggests that the latter prevent a cascade of structural rearrangements necessary for the formation of the active LuxR dimer. (C) 2004 Elsevier Ltd. All rights reserved.
This invention provides new therapeutic peptides, i.e. new protracted Exendin-4 compounds, pharmaceutical compositions and the use of such.
本发明提供了新的治疗性肽,即新的长效Exendin-4化合物、药物组合物及其用途。
Facile one-pot synthesis of sulfonyl fluorides from sulfonates or sulfonic acids
作者:Ying Jiang、Njud S. Alharbi、Bing Sun、Hua-Li Qin
DOI:10.1039/c9ra02531f
日期:——
abundant and inexpensive sulfonates (or sulfonic acids) to the highly valuable sulfonyl fluorides was developed. This new protocol features mild reaction conditions using readily available and easy-to-operate reagents. A diverse set of sulfonyl fluorides was prepared facilitating the enrichment of the sulfonyl fluoride library.
The present invention relates to a PYY or PP peptide derivative or analogue thereof derivatised with one or more serum albumin binding side chains comprising a dis-tal tetrazole or carboxylic acid group. Moreover, the invention relates to compositions hereof and methods of treatment of conditions responsive to Y receptor modulation.
Process for the manufacture of saturated mono- or polycyclic compounds
申请人:Cognis IP Management GmbH
公开号:EP2179980A1
公开(公告)日:2010-04-28
Suggested is a process for the manufacture of saturated mono- or polycyclic compounds via hydrogenation of the respective unsaturated mono- or polycyclic compounds, which is characterised in that the reaction is conducted in an aqueous/organic two phase system in the presence of a water soluble catalyst consisting of a Group VIII metal and a hydrophilic ligand.
Described herein are nanoparticles that are coated with a bilayer of molecules formed from surface binding molecules and amphiphatic molecules. The bilayer coating self assembles on the nanoparticles from readily available materials/molecules. The modular design of the bilayer coated nanoparticles provides a means for readily and efficiently optimizing the properties of the bilayer coated nanoparticle compositions. Also described herein are uses of such nanoparticles in medicine, laboratory techniques, industrial and commerical applications.