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Journals and Conferences
The possibility of obtaining of new polymeric salts on the basis of guanidinium and phosphonium polysulfones was investigated. Guanidinium and phosphonium polysulfones were synthesized by free radical copolymerization technique. Polysulfonylpyrrolidinium and polysulfonylpyrrolidinylphosphonium hydroxides were obtained by ion chromatography. Chemical… (More)
Alumina micro-spheres with mesoporous structure called porous aluminium oxide (POA) were prepared through a hydrothermal method using Al2(SO4)3·18H2O followed by a thermal decomposition process. Silver nanocomposites of POA (Ag/POAs) with high biochemical activity were synthesized by sorption of silver nanoparticles in the matrix of POA. Synthesis of… (More)
Lupane C-28 monoallylamides with α-ketoxime and α-hydroxyoxime groups in ring A were prepared from betulonic acid. Formation of A-secolupane C-3(28) mono- and diallylamides was used as an example to demonstrate that a one-step synthesis of 2,3-secotriterpene amides was possible by fragmentation of betulin and betulonic acid α-oximes by oxalylchloride or… (More)
New water-soluble nanocomposites (AgNCs) based on Ag and copolymers of 2,2-diallyl-1,1,3,3-tetraethylguanidiniumchloride with N-vinylpyrrolidone [poly(AGC-VP)] and vinylacetate [poly(AGC-VA)] have been developed. Antibacterial action of new silver nanocomposites on S. epidermidis 33 (planctonic cells and biofilms) is reported in this study. AgNCs strongly… (More)
Vinyl-containing lupane- and oleanane-type C-3 and C-28 esters were synthesized from betulin and A-secotriterpene alcohols. The reaction of 2,3-secolupane alcohol 5 with vinylacetic acid produced ester 8 and a recyclization product, methyl 2β,3β-dihydroxylup-20(29)-en-28-oate (13), which was formed quantitatively in the reaction of 5 with maleic acid.
Copolymers of new structural types based on 2,2-diallyl-1,1,3,3-tetraethylguanidinium chloride were obtained by free radical polymerization. Antimicrobial activity with respect to some bacteria, spores, and fungi was studied by the method of double serial dilutions.
Alumina micro-spheres with mesoporous structure called porous aluminum oxide (POA) were prepared through a hydrothermal method using Al2(SO4)3·18H2O followed by a thermal decomposition process. Nanocomposites with high biochemical activity were synthesized by sorption of silver nanoparticles in the matrix of POA. Silver nanocomposites of POA (Ag/POAs) were… (More)
Free radical copolymerization was used to prepare copolymers of new structural types on the basis of azanorbornenes, 2,2-diallyl-1,1,3,3-tetraethylguanidinium chloride, and tris(diethylamino)diallylaminophosphonium salts with sulfur dioxide, two vinyl monomers, and maleimides. Two methods were used to assess the antioxidant activity of the resulting… (More)
A series of polysulfones of new structural types on the basis of azanorbornenes, 2,2-diallyl-1,1,3,3-tetraethylguanidiniumchloride and tris(diethylamino)diallylaminophosphonium salts were obtained by free radical polymerization reaction. Their antioxidant properties in lipid peroxidation induced by iron/ascorbate and in erythrocyte hemolysis by H2O2 were… (More)
A series of copolymers of 2,2-diallyl-1,1,3,3-tetramethylguanidinium chloride and tris(diethylamino)diallylaminophosphonium chloride and tetrafluoroborate with sulfur dioxide have been obtained by free-radical polymerization reactions. The antimicrobial activity of the synthesized compunds with respect to several bacteria, spores, and fungi was determined… (More)