Pseudomonas putia'a oxidation of benzene affords cis-3,5-cyclohexadiene1,2diol (JJ which serves as a novel precursor for the syntheses of several natural products including (+)-pinitol, (+)-condunto1 F, D-(-)-myo-inositol 1,4,5-trisphosphate and Dmyo-inositol 1-phosphate. The versatility of this approach is further demonstrated by the preparation of other functionalised cyclitol derivatives, in...

in a greenhouse experiment, changes in inorganic phosphorus fractions as well as their availability in the rhizosphere of rice (oryza sativa c.v. khazar) crop, following an application of 40 mg p (as monocalcium phosphate per kg of soil) were investigated in paddy soils north of iran. the study was performed as a 14×2 factorial in a completely randomized design of two factors namely: soil at 14...

The development of new ROMP-derived silica-immobilized heterocyclic phosphate reagents and their application in purification-free protocols is reported. Grafting of norbornenyl norbornenyl-functionalized (Nb-tagged) silica particles with functionalized Nb-tagged heterocyclic phosphate monomers efficiently yield high-load, hybrid silica-immobilized oligomeric heterobenzyl phosphates (Si-OHBP) an...

background: the exact pathophysiology of testicular degeneration, following varicocele has not been completely understood yet.   objective: the current study was designed to determine the effect of varicocele on germinal epithelium (ge) cytoplasmic biohistochmical alterations.   materials and methods: to follow-up this study, left varicocele was induced in test groups. non-varicocelized rats we...

Objective: Activation of cholinergic muscarinic receptors leads to activation of membrane bound phospholipase C, leading to generation of IP3 and diacylglycérol, The present study aimed at measuring muscarinic receptor-mediated phosphoinositide breakdown in three different regions of rat brain. Methods: Cortical, hippocampal and striatal slices labeled with [3H] myo-inositol were incubated with...

Due to the similar chemical properties to the inorganic component in calcified tissues, synthetic calcium phosphate has been considered as ideal biomaterials with excellent biocompatibility. Nanostructured calcium phosphate materials play an important role in the formation of hard tissues in nature. It is reported that calcium phosphates materials in nano-size can mimic the dimensions of consti...

A helicopter crashed in January 2003 on the 5 m-thick perennial ice cover of Lake Fryxell, spilling synthetic turbine oil Aeroshell 500. Molecular compositions of the oils were analyzed by gas chromatography-mass spectrometry and compared to the composition of contaminants in ice, meltwater, and sediments collected a year after the accident. Aeroshell 500 is based on C20-C33 Pentaerythritol tri...