Immunosuppressive but Non-LasR-Inducing Analogues of the Pseudomonas aeruginosa Quorum-Sensing Molecule N-(3-Oxododecanoyl)-l-homoserine Lactone
摘要:
The Pseudomonas aeruginosa quorum-sensing molecule N-(3-oxododecanoyl)-l-homoserine lactone (1) is involved not only in bacterial activation but also in subversion of the host immune system, and this compound might thus be used as a template to design immunosuppressive agents, provided derivatives devoid of quorum-sensing activity could be discovered. By use of a leukocyte proliferation assay and a newly developed bioluminescent P. aeruginosa reporter assay, systematic modification of 1 allowed us to delineate the bacterial LasR-induction and host immunosuppressive activities. The main determinant is replacement of the methylene group proximal to the beta-ketoamide in the acyl chain of 1 with functions containing heteroatoms, especially an NH group. This modification can be combined with replacement of the homoserine lactone system in 1 with stable cyclic groups. For example, we found the simple compound N(1)-(5-chloro-2-hydroxyphenyl)-N(3)-octylmalonamide (25d) to be over twice as potent as 1 as an immune suppressor while displaying LasR-induction antagonist activity.
Biocatalytic <i>N</i>-Alkylation of Amines Using Either Primary Alcohols or Carboxylic Acids via Reductive Aminase Cascades
作者:Jeremy I. Ramsden、Rachel S. Heath、Sasha R. Derrington、Sarah L. Montgomery、Juan Mangas-Sanchez、Keith R. Mulholland、Nicholas J. Turner
DOI:10.1021/jacs.8b11561
日期:2019.1.23
The alkylation of amines with either alcohols or carboxylic acids represents a mild and safe alternative to the use of genotoxic alkyl halides and sulfonate esters. Here we report two complementary one-pot systems in which the reductive aminase (RedAm) from Aspergillus oryzae is combined with either (i) a 1° alcohol/alcohol oxidase (AO) or (ii) carboxylic acid/carboxylic acid reductase (CAR) to affect
[EN] KINASE INHIBITORS<br/>[FR] INHIBITEURS DE KINASE
申请人:DEVGEN NV
公开号:WO2005082367A1
公开(公告)日:2005-09-09
The invention provides the use of a compound or a composition comprising said compound for inhibiting the activity of at least one kinase, other than ROCK kinase, in vitro or in vivo, pharmaceutical and/or veterinary compositions comprising such compounds, medical and veterinary uses of such compounds and the compounds themselves.
The selective preparation of n-propylamines by the rhodium catalysed reaction of ethylene and syngas with alkylamines
作者:M.D. Jones
DOI:10.1016/0022-328x(89)87190-6
日期:1989.5
The aminomethylation of ethylene with a primary amine has been shown to provide a highly selective route to n-propylamines; the rhodium catalysed reaction of n-propylamine with ethylene and syngas (2/1, H2/CO) affords di-n-propylamine with 98% selectivity (with respect to ethylene). The reaction of amines of the type RR1NH with the ethylene/syngas mixture and a rhodium catalyst provides a highly selective
已显示乙烯与伯胺的氨基甲基化为正丙胺提供了高度选择性的途径。n-丙胺与乙烯和合成气(2 / 1,H 2 / CO)的铑催化反应得到二正丙胺(相对于乙烯)具有98%的选择性。RR 1 NH型胺与乙烯/合成气混合物和铑催化剂的反应为正丙胺RR 1 NPr(R = Pr,R 1 = H; R = t-Bu)提供了高度选择性和通用的途径,R 1 = H; R = n-Bu,R 1 = H; R = C 8 H 17,R 1 = H,R = R 1 = Pr; R = HOCH 2 CH在图2中,R 1= H,R = PhCH(OH)CH 2,R 1= H)。
PLATINUM COMPOUND HAVING AMINO OR ALKYLAMINO-CONTAINING SUCCINIC ACID DERIVATIVES AS LEAVING GROUP, PREPARTION METHOD THEREOF, AND USE THEREOF
申请人:BEIJING FSWELCOME TECHNOLOGY DEVELOPMENT CO., LTD.
公开号:US20140349985A1
公开(公告)日:2014-11-27
Disclosed are a category of platinum compounds having amino- or alkylamino-containing succinato derivatives as leaving group, or pharmaceutically acceptable salts thereof, preparation method thereof, and medicinal compositions containing the compounds. Also disclosed is a use of the compounds in treating cell proliferative diseases, especially cancers. The platinum compounds of the present invention have high water solubility and small toxic side effect.
[EN] SURFACE TREATMENTS<br/>[FR] TRAITEMENTS DE SURFACE
申请人:BOVIN NICOLAI VLADIMIROVICH
公开号:WO2016185331A1
公开(公告)日:2016-11-24
Methods of treating surfaces to provide an antibacterial surface or a surface to which micro-dimensioned particles will adhere are disclosed. Water dispersible selenide-lipid and polycation-lipid constructs for use in the methods are also disclosed.