نتایج جستجو برای: toluenesulfonic acid ptsa

تعداد نتایج: 747488  

2011
Henricus A. M. Mutsaers Lambertus P. van den Heuvel Lauke H. J. Ringens Anita C. A. Dankers Frans G. M. Russel Jack F. M. Wetzels Joost G. Hoenderop Rosalinde Masereeuw

During chronic kidney disease (CKD), there is a progressive accumulation of toxic solutes due to inadequate renal clearance. Here, the interaction between uremic toxins and two important efflux pumps, viz. multidrug resistance protein 4 (MRP4) and breast cancer resistance protein (BCRP) was investigated. Membrane vesicles isolated from MRP4- or BCRP-overexpressing human embryonic kidney cells w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم پایه 1389

در این پروژه ما واکنش بین مشتقات استوفنون وتیواوره را با استفاده ازکاتالیزورهای ptsa، dabco، naoh، h2so4 بررسی کردیم. همه ساختارها به روش طیف سنجی ir، h-nmr 1 تایید شدند.

Journal: :Catalysts 2022

The tert-butyloxycarbonyl (Boc) group is one of the most widely used amine-protecting groups in multistep reactions synthetic organic chemistry as well peptide synthesis. Traditional methods to remove Boc have disadvantages terms high acidity, use expensive reagents, excessive amounts catalysts and harmful solvents temperatures, making them environmentally unsustainable. Therefore, more efforts...

Journal: :Dalton transactions 2013
Ibrahim El-Zoghbi Todd J J Whitehorne Frank Schaper

A cyclohexanediyl-bridged, bis(N-xylyl) diketiminate ligand, (±)-C6H10(nacnac(Xyl)H)2, LH2 (Xyl = 2,6-dimethylphenyl), was obtained from the reaction of [(2,6-dimethylphenyl)amino]-pent-3-en-2-one first with Meerwein's salt, then with (±)-cyclohexanediamine. The reaction of the ligand with Zr(NMe2)4 yielded LZr(NMe2)2. Protonation of the remaining diamide ligands with EtOH or [H2NMe2]Cl yielded...

Journal: :Orthopaedic Journal of Sports Medicine 2023

Objectives: Increased posterior tibial slope angle (PTSA) increases the risk for anterior cruciate ligament (ACL) tear and ACL graft failure. Proximal changing osteotomies are employed in adult population; growth modulation procedures may present a treatment opportunity skeletally immature. This procedure has not been described context of injuries, rate at which could be corrected is unknown. O...

Journal: :Remote Sensing 2022

Anomaly perception of infrared point targets has high application value in many fields, such as maritime surveillance, airspace and early warning systems. This kind abnormality includes the explosion target, separation between stages, disintegration caused by abnormal strike, etc. By extracting radiation characteristics continuous frame targets, it is possible to analyze warn target state time....

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