ABSTRACT. 2-N,N-dimethylamino-2-oxido-3-alkyl(aryl)-1-hydro-2-benzo[1,3,2]diazaphosphinin-4-one (2) derivatives are synthesized by one pot reaction reacting equimolar quantities of anthranilic acid, primary amine, and N,N-dimethylphosphoramic dichloride under reflux ethanol with good yields. The structure the compounds were established on basis their infrared, nuclear magnetic resonance spectra...

Abstract Alkyl-4-quinolones (AQs) are natural compounds synthesized by bacteria. Members of this group known quorum-sensing molecules. Other biological functions, such as anti-bacterial, anti-algal, antifungal, and anti-malaria activities have also been reported. The synthetic pathways AQs validated in Pseudomonas aeruginosa . Five genes ( pqsA–E ) involved the synthesis 2-heptyl-4(1H)-quinolon...

In this study, the effects of solvents and molecular structure upon acidity, five 3-alkyl(aryl)-4-phthalimido-4,5-dihydro-1H-1,2,4-triazol-5-ones (3-7) were potentiometrically titrated with tetrabutylammonium hydroxide (TBAH) in four different anhydrous (isopropyl alcohol, acetonitrile, tert-butyl alcohol N,N-dimethylformamide) HNP corresponding pKa values determined by half-neutralization meth...

In this research, amphiphilic derivatives of kappa carrageenan (KC) were synthesized by hydrophobic modification with an alkyl halide (1-Octyl chloride). Three polymers different degrees substitution (DS) obtained the Williamson etherification reaction in alkaline medium. The effect molar ratio (R = reagent/polymer) on DS was investigated at ratios (1, 2, and 3). KC (KCRs) characterized techniq...

The propensity of human embryonic stem cells to die upon enzymatic disaggregation or low-density plating is an obstacle to their isolation and routine use in drug discovery and basic research. Equally, the very low rate of establishment of implanted cells hinders cell therapy. In the present study we have developed a high-content assay for human embryonic stem cell survival and used this to scr...

heterocyclic derivative contain triazole ring was synthesized and characterized the product their structures by infrared spectroscopy, 1H-NMR, 13C-NMR instrumental techniques. Compound (4) reacting of Schiff base (3) with an three moles alkyl halide (p-phenyl phenacyl bromide). Final played important role in photostabilizer polymer (PS), showed activity as a when exposed to UV light (300 hours).