A novel selective and substrate-dependent synthetic protocol has been developed towards the synthesis of various fluorine-containing, highly functionalized cycloalkane derivatives. The method involves the stereoselective epoxidation of some unsaturated cyclic β-amino acid derivatives as model compounds, followed by a regioselective fluoride opening of oxiranes under various conditions with Deox...

A new fluorescent method was developed based on the ulifloxacin-europium (III)-sodium dodecylbenzene sulfonate system for the determination of ulifloxacin, the active metabolite of prulifloxacin. Sodium dodecylbenzene sulfonate formed a ternary complex with ulifloxacin-europium (III) and significantly enhaneed the characteristic fluorescence of europium (III). The enhanced fluorescence intensit...

in this study, the adsorption of thallium (iii) ion from aqueous solutions onto modified znonanopowder as a fairly low cost adsorbent has been investigated in batch mode. it was found thatmodification of the adsorbent was essential for obtaining the significant adsorption percentage. theadsorbent modified by sodium phosphate solution. the effect of experimental parameters such asinitial ph of s...

Temperature-jump relaxation kinetic studies show that the complex formation between Ca2+ and the metallochromic dye arsenazo III (Ar) is associated with a rapid mode (less than or equal to 10 mus-range) involving both Ca2+ and Na+ of the Na-salt of Ar and a slower mode (approximately 10 ms range) which can be attributed to structural rearrangements in the 1:2 complex CaAr2. The kinetic data sug...

In Sprague-Dawley rats, renal angiotensin (Ang) type 2 receptors (AT(2)Rs) mediate natriuresis in response to renal interstitial (RI) D(1)-like receptor stimulation or RI Ang III infusion. After D(1)-like receptor activation, apical membrane (AM) but not total renal proximal tubule cell AT(2)R expression is increased, suggesting that AM AT(2)R translocation may be important for natriuresis. The...

Previous studies have shown that transection of the sciatic nerve induces dramatic changes in sodium currents of axotomized dorsal root ganglion (DRG) neurons, which are paralleled by signi®cant changes in the levels of transcripts of several sodium channels expressed in these neurons. Sodium currents that are resistant to tetrodotoxin (TTX-R) and the transcripts of two TTX-R sodium channels ar...

In Sprague-Dawley rats, renal angiotensin (Ang) type 2 receptors (AT2Rs) mediate natriuresis in response to renal interstitial (RI) D1-like receptor stimulation or RI Ang III infusion. After D1-like receptor activation, apical membrane (AM) but not total renal proximal tubule cell AT2R expression is increased, suggesting that AM AT2R translocation may be important for natriuresis. The onset of ...