نتایج جستجو برای: aryldialkylphosphatase

تعداد نتایج: 580  

Journal: :Clinical chemistry 2004
Christoph Bergmeier Rüdiger Siekmeier Werner Gross

BACKGROUND Paraoxonase (PON1) associated with HDL can be regarded as a cardio- and vasoprotective enzyme. However, because HDL is not a homogeneous fraction, it is important to investigate in which subgroups of HDL active PON1 is located. It would also be useful to determine density profiles of the HDL apolipoproteins (Apo) E and J. METHODS We investigated the density range of HDL (rho = 1.06...

Journal: :Angewandte Chemie 2013
Manabu Hatano Takahiro Horibe Kazuaki Ishihara

A little cooperation goes a long way: The cooperative Brønsted/Lewis acid-base supramolecular catalysts formed in situ from simple chiral magnesium(II) binaphtholate aqua complexes promoted the highly enantioselective 1,4-hydrophosphinylation of α,β-unsaturated esters with diaryl phosphine oxides and 1,2-hydrophosphonylation of α,β-unsaturated ketones with dialkyl phosphites (see scheme).

Journal: :Organic & biomolecular chemistry 2011
Ramesh M Patel Vedavati G Puranik Narshinha P Argade

The first SeO(2) induced (Z)-selective allylic alcohol formation of dialkyl alkylidenesuccinates has been demonstrated to accomplish one-step syntheses of several essential butenolides and fused butenolides via an unusual E- to Z- carbon-carbon double bond isomerisation followed by the lactonization pathway. The observed regio- and stereoselective SeO(2) allylic oxidation protocol has also been...

Journal: :Organic & biomolecular chemistry 2011
Sarah Zeghada Ghenia Bentabed-Ababsa Aïcha Derdour Safer Abdelmounim Luis R Domingo José A Sáez Thierry Roisnel Ekhlass Nassar Florence Mongin

Reactions were performed from aryl azides on the one hand, and activated alkenes coming from β-dicarbonyl compounds or malonodinitrile on the other hand, either with recourse to conventional heating or to microwave activation, to afford 1-aryl-1H-1,2,3-triazoles. The mechanism and the regioselectivity of the reactions involving β-dicarbonyl compounds have been theoretically studied using DFT me...

Journal: :Physiological research 2007
K Sumegová Z Nagyová I Waczulíková I Zitnanová Z Duracková

Paraoxonase 1 (PON1) seems to have a relevant role in detoxifying processes and in atherosclerosis. The aim of this study was to determine PON1 activity, the total antioxidant capacity, as well as entire lipid profile in children for screening of possible risk of atherosclerosis development. Serum PON1 arylesterase/paraoxonase activities were determined spectrophotometrically. The total antioxi...

Journal: :Dalton transactions 2015
Qian-Rui Huang Jennifer R Kingham Nikolas Kaltsoyannis

[AnX(3)](2)(μ-η(2):η(2)-N(2)) (An = Th-Pu; X = F, Cl, Br, Me, H, OPh) have been studied using relativistic density functional theory. Geometric and vibrational data suggest that metal→N(2) charge transfer maximises at the protactinium systems, which feature the longest N-N bonds and the smallest σ(N-N), as a result of partial population of the N-N π* orbitals. There is very strong correlation o...

Journal: :Chemical communications 2013
Nanase Uchiyama Eiji Shirakawa Tamio Hayashi

The mechanism of the previously developed cross-coupling reaction of aryl Grignard reagents with aryl halides was explored in more detail. Single electron transfer from an aryl Grignard reagent to an aryl halide initiates a radical chain by giving an anion radical of the aryl halide. The following propagation cycle consists entirely of anion radical intermediates.

2005
Rosalie Crouch

From Estelle Doheny Eye Foundation and Departments of Oph. thalmology and Pathology, University of Southern California, Los Angeles, and from the Medical University of South Carolina.* Supported by Estelle Doheny Eye Foundation research funds, in part by Research to Prevent Blindness and by the National Institute of Health grant EYO5662. Submitted for publication: July 25, 1984. Reprint request...

Journal: :African health sciences 2013
M Atli

BACKGROUND It has been suggested that physical activity is an important factor in the prevention and treatment of cardiovascular diseases. Low serum paraoxononase-1 (PON1) activity is with an associated risk of atherosclerotic disease. OBJECTIVES In this study, we aimed to investigate serum PON1 activity and lipid hydroperoxide (LOOH) levels in adult football players after three days football...

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