由于其预期的生物活性而属于第三代设计的离子液体是具有作为植物保护产品的高潜在应用的化合物。本研究描述了基于 1,4-二氮杂双环[2.2.2]辛烷 (DABCO) 的烷基衍生物和源自天然壬酸的阴离子的新型离子液体的合成和表征。开发的合成方法可以获得高产率(≥96%)的产品,并且液体在室温下被表征为高粘度液体。这允许将产品分类为离子液体 (IL)。所得离子液体的结构基于它们的核磁共振和红外光谱以及元素分析得到证实。所有产品都表现出表面活性并能够部分润湿疏水表面。测试的离子液体对冬油菜表现出更高的除草活性(与温室研究中的商业制剂相比,Brassica napus L.) 和普通的lambsquarters ( Chenopodium album L.) 的剂量较低。所研究的离子液体作为拒食剂对各种昆虫也表现出不同的作用。对属于粮仓象鼻虫物种 ( Sitophilus granarius L.)
Alkylated 1,4-diazabicyclo[2.2.2]octanes: self-association, catalytic properties, and biological activity
作者:E. P. Zhiltsova、T. N. Pashirova、R. R. Kashapov、N. K. Gaisin、O. I. Gnezdilov、S. S. Lukashenko、A. D. Voloshina、N. V. Kulik、V. V. Zobov、L. Ya. Zakharova、A. I. Konovalov
DOI:10.1007/s11172-012-0016-7
日期:2012.1
Aggregation of 1-hexadecyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide in the presence of diethyl 4-nitrophenyl phosphate was studied using 1H NMRspectroscopy. The quantitative characteristics of the aggregation were determined. The data obtained were used to explain the catalytic effect of micelles on the hydrolysis of the phosphate. It was found that the aggregation properties and biological activity
Complex of 1-hexadecyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide with copper dibromide: structure, aggregation, and biological activity
作者:E. P. Zhil´tsova、M. R. Ibatullina、S. S. Lukashenko、T. N. Pashirova、A. D. Voloshina、V. V. Zobov、S. A. Ziganshina、M. P. Kutyreva、L. Ya. Zakharova
DOI:10.1007/s11172-016-1463-3
日期:2016.5
The aggregation and adsorption properties of a new complex of 1-hexadecyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide with copper dibromide were studied by methods of conductometry, tensiometry, and dynamic light scattering. The critical micelle concentration, size of the aggregates, and adsorption characteristics at the water—air interface were determined. The antimicrobial and antifungal effects were
Metallomicellar Complex of 1-Hexadecyl-4-aza-1-azoniabicyclo-[2.2.2]octane Bromide with Copper Dibromide for Solubilization of Nitrofurantoin
作者:E. P. Zhil’tsova、M. R. Ibatullina、S. S. Lukashenko、M. P. Kutyreva、L. Ya. Zakharova
DOI:10.1134/s1070428018030107
日期:2018.3
amphiphilic 1-hexadecyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide–copper dibromide complex solubilize nitrofurantoin (furadonin). The solubilizing capacity of premicellar aggregates with respect to nitrofurantoin is 15 times higher than that of micelles and is considerably higher (by a factor of 5–16) than the solubilizing effect of micellar solutions of the complex, ligand, and conventional cationic surfactants
The Phase Transition of 1,4-Dialkyl-1,4-diazoniabicyclo[2.2.2]octane Dibromides, C<i><sub>n</sub></i>–DABCO–C<sub><i>n</i>+2</sub>–Br
作者:Kengo Imamura、Jun Shimizu、Takashi Nogami
DOI:10.1246/bcsj.59.2699
日期:1986.9
The phase transition of 1,4-dialkyl-1,4-diazoniabicyclo[2.2.2]octane dibromide (diquaternary salt) in which the difference in the carbon numbers of the two alkyl groups is two, was studied by means of differential scanning calorimetry, infrared absorption spectroscopy, and a study of the bromide-anion conductivities. DSC measurements revealed the existence of the metastable phase. The conversion rate from the metastable phase to the stable phase was too slow to be followed. The phase transition could be explained by the free energy-temperature relation. The temperature-dependence of the infrared absorption spectra showed that the band progressions due to two different alkyl chains disappeared at the transition temperature. This shows that the trans-zigzag conformation in the low-temperature phase is destroyed by the conformational change of the alkyl chain at the transition temperature. The free energy-temperature relation was also confirmed by the IR spectra. Discontinuous increases in the bromide-anion conductivities were observed at the transition temperatures. The conductivity jump was explained by the voids caused by the conformational change in the alkyl chain.
Cationic lipids have long been known to serve as antibacterial and antifungal agents. Prior efforts with attachment of cationic lipids to carbohydrate-based surfaces have suggested the possibility that carbohydrate-attached cationic lipids might serve as antibacterial and antifungal pharmaceutical agents. Toward the understanding of this possibility, we have synthesized several series of cationic lipids attached to a variety of glycosides with the intent of generating antimicrobial agents that would meet the requirement for serving as a pharmaceutical agent, specifically that the agent be effective at a very low concentration as well as being biodegradable within the organism being treated. The initial results of our approach to this goal are presented.