Evolutionary Development and Structural Diversity of Natural Antimicrobial Peptides,Peptidometics, and Cationic Amphiphiles Based on Amino Acids

Russian Journal of General Chemistry - The review article traces the main trends of the synthetic approach to the solution of the problem of overcoming the resistance of pathogenic bacterial...     

Synthetic asymmetric lipid-like organosilanes for liposomal nanohybrid cerasomes toward potential medical applications

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Synthesis of neoglycolipids based on D-lactose

A synthesis was performed of amphiphilic D-lactose derivatives differing by the length and number of aliphatic chains. The compounds may be applied to the carbohydrate modification of phosphatidylcholine liposomes.     

Multifunctional Lipoamino Acid Derivatives with Potential Biological Activity

This work aims to develop a number of multifunctional derivatives of lipoamino acids, which potentially have different biological activities. To achieve this aim, the hydrophilic-lipophilic balance for a number of cationic amphiphile structures based on L-glutamic acid and short diamines is theoretically calculated. The developed schemes and performed synthesis allowed us to produce preparative sample quantities for further physicochemical and biological tests. The performed calculations, measurements, and experiments on the liposomal dispersions of the synthesized compounds demonstrate the possibility of designing the same type of structures of an amphiphilic nature based on aliphatic amino acid derivatives and diamines, which can be used both in antibacterial therapy and as the delivery vehicles for genetic material.     

Stabilized phospholipid dispersions based on organosilicon amphiphiles

Cerasome-forming amphiphile based on L-aspartic acid dihexadecyl ester derivative with (3-aminopropyl) triethoxysilane moiety in its structure was synthesized. Mixed storage-stable lipid dispersions containing phosphatidylcholine were prepared and their properties were examined.     

Capillary electrophoresis determination of nitrate and nitrite in high-salt perchlorate solutions for the UC dissolution study

The capillary electrophoresis method with direct UV detection is proposed for the determination of nitrite and nitrate in high-salt perchlorate solutions issued from uranium carbide dissolution. The isotachophoretic sample stacking was used to compensate for the perchlorate matrix interference. Simple electrolyte composed of 120 mM formiate buffer, pH 3.8 enabled the nitrate and nitrite determination in the presence of up to 1000-fold excess of perchlorate with 2 μM and 4 μM detection limits for nitrate and nitrite, respectively. The proposed method was applied to the determination of nitrate and nitrite in high-salt non-irradiated uranium carbide dissolution samples.