[DE] VERWENDUNG VON ZITRONENSÄUREESTERN ALS KORROSIONSINHIBITOR IN ALKOHOLISCHEN, ALS AEROSOL VERSPRÜHBAREN KOSMETISCHEN ZUSAMMENSETZUNGEN<br/>[EN] USE OF CITRIC ACID ESTERS AS CORROSION INHIBITOR IN ALCOHOLIC COSMETIC COMPOSITIONS THAT CAN BE SPRAYED AS AN AEROSOL<br/>[FR] UTILISATION D'ESTERS D'ACIDE CITRIQUE EN TANT QU'INHIBITEURS DE CORROSION DANS DES COMPOSITIONS COSMÉTIQUES ALCOOLIQUES PULVÉRISABLES UTILISÉES SOUS FORME D'AÉROSOL
申请人:HENKEL AG & CO KGAA
公开号:WO2016198202A1
公开(公告)日:2016-12-15
Die vorliegende Erfindung betrifft die Verwendung von Estern der Zitronensäure als Korrosionsinhibitor in alkoholischen kosmetischen Zusammensetzungen, welche Wasser sowie Elektrolyte enthalten und als Aerosol aus metallischen Aerosolcontainern versprühbar sind.
Discovery of novel lipophilic inhibitors of OXA-10 enzyme (class D β-lactamase) by screening amino analogs and homologs of citrate and isocitrate
Aminocitrate (and homolog) derivatives have been prepared by bis-alkylation of glycinate Schiff bases with bromoacetates (and ethyl acrylate), followed by N-acylation and esters (partial or complete) deprotection. Aminoisocitrate was similarly obtained by mono-alkylation with diethyl fumarate. Evaluation against representative β-lactamases revealed that the free acid derivatives are modest inhibitors
The title compound 4 has been prepared in four steps from ethylglycinate in 63% overall yield. This amino analog of citric acid has been co-crystallized with the class A beta-lactamase BS3 of Bacillus licheniformis and the structure of the complex fully analyzed by X-ray diffraction. Tris-ethyl aminocitrate 3 and the free tris-acid 4 have been tested against a member beta-lactamase from all distinct