Synthesis of an Efficiency Heterocyclic Systems, Surface Properties and Potential Pharmacological Interest

Synthesis of biologically active heterocyclic derivatives with the related fused systems incorporating a long chain of a fatty compound was described via the reactions of 5-amino-N-octadecyl-1H-pyrazole-4-carboxamide 4 with appropriate reagents namely, enaminones, and β-diketones. Hydroxylation of the synthesized compounds using a number of moles of propylene oxide gave nonionic surface-active agents having a good solubility in water, easy to handle, good biodegradability and announced surface properties that revealed the importance of their applications in avoiding pollution problems, and making them safe for humans and the environment. The surface properties and antimicrobial activity of these compounds were investigated, which showed low toxicity, high efficiency in the surface and biological activities. Therefore, these compounds may be exhibit capable potential in industry applications and can be used in the manufacture of cosmetics, textiles, moderate emulsifiers, dyes, pesticides and drugs.

Synthesis, Surface Parameters, and Biodegradability of Water-soluble Surfactants for Various Applications

The synthesis of water-soluble heterocyclic compounds was verified on the basis of nonionic surfactants for use as surface-active agents. Surface characteristics such as surface and interfacial tensions, cloud point, wetting time, emulsion stability, foaming height and foaming stability were measured for these surface factors in aqueous solutions. In addition, the critical micelle concentration (CMC), the surface pressure at CMC (π_cmc), the effectiveness of surface tension reduction (pC₂₀), the maximum surface concentration (Γ_ma.) and the minimum area/molecule at the aqueous solution/air interface (A_min) were calculated. Moreover, the biodegradability for these nonionic surfactants has been investigated. Furthermore, the antimicrobial evaluation has been evaluated with some surfactants that have demonstrated a potent cytotoxicity as antibacterial, antifungal and anticancer. These surfactants have a good water solubility, low toxicity, environmentally friendly environment, high foam, good emulsifier and easy production that will be used them in various fields such as medical drugs, insecticides, detergents, emulsifiers, cosmetics, inks clothing, leather industry and oil recovery.

Synthesis of Five and Six-Membered Heterocycles Using Activated Nitriles for Industrial Applications

The aim of this study is a synthesis of new bioactive heterocyclic compounds incorporated fatty chain for use in different industrial applications. Cyanoacetamide derivative (2) was successfully transferred into five and six membered heterocyclic derivatives by the reaction with various chemical reagents. Addition number of moles of propylene oxide to these compounds gave nonionic surface-active agents having a good solubility, biodegradability and hence lowers the toxicity to human beings and becomes environmentally friendly. The antimicrobial and surface activities were investigated that showed the most of them have pronounced activity, which makes them suitable for diverse applications like the manufacturing of drugs, pesticides, emulsifiers, cosmetics, etc.