Pyrazole Derived Cationic Surfactants and their Tin and Copper Complexes: Synthesis, Surface Activity, Antibacterial and Antifungal Efficacy
作者:Nabel A. Negm、Medhat M. Said、Salwa M. I. Morsy
DOI:10.1007/s11743-009-1178-7
日期:2010.10
and the cationic ligands arranged in the apexes, while the halide ions in the center. The synthesized compounds were evaluated as biocides against different types of bacteria and fungi. The biological activity data showed that the cationicsurfactants exhibit moderate to high efficacy against the tested microorganisms (either bacteria or fungi). While, complexation of these cationicsurfactants with Cu
五元杂环阳离子3-吡唑鎓表面活性剂,即:2- [2-(烷氧基)-2-氧代乙基] -3-甲基-5-氧代-1-苯基-4-,5-二氢-1 H --3-吡唑鎓溴化物(合成十二烷基十二烷基)及其铜和锡配合物,使用不同的光谱学工具确认其结构。金属配合物的红外光谱表明,这些化合物与过渡金属离子(M 2+)在中心,阳离子配体排列在顶点,而卤离子在中心。评价合成的化合物作为针对不同类型细菌和真菌的杀菌剂。生物学活性数据表明,阳离子表面活性剂对被测微生物(细菌或真菌)表现出中等至高效的功效。同时,这些阳离子表面活性剂与Cu(II)和Sn(II)离子络合,抗菌活性大大提高。对这些化合物的表面活性进行了讨论,并将其与化学结构和杂环部分上取代基的类型相关联。同时,抗菌测定与合成化合物的表面活性相关。
Antimicrobial Poly(2-methyloxazoline)s with Bioswitchable Activity through Satellite Group Modification
作者:Christian Krumm、Simon Harmuth、Montasser Hijazi、Britta Neugebauer、Anne-Larissa Kampmann、Helma Geltenpoth、Albert Sickmann、Joerg C. Tiller
DOI:10.1002/anie.201311150
日期:2014.4.7
study, we demonstrate a concept in which an antimicrobial polymer is deactivated by the cleavage of a single group. Following the satellitegroup approach, a biocidal quaternary ammonium group was linked through a poly(2‐methyloxazoline) to an ester satellitegroup. The polymer with an octyl‐3‐propionoate satellitegroup shows very good antimicrobialactivity against Gram‐positive bacterial strains. The