نتایج جستجو برای: dimethyl phosphate

تعداد نتایج: 129606  

A new one-dimensional uranium(VI) coordination polymer, [UO2(μ-DMP)2(TMP)]n (1) (DMP is dimethyl phosphate and TMP is trimethyl phosphate), was prepared from the reaction of UO2(NO3)2.6H2O and TMP in in THF (THF is tetrahydrofuran) as a solvent. Suitable crystals of this complex for crystal structure determination were obtained by slow evaporation of the produced yellow solution at room tempera...

Journal: :Applied and environmental microbiology 2004
Sean Yu McLoughlin Colin Jackson Jian-Wei Liu David L Ollis

Phosphotriesterases catalyze the hydrolytic detoxification of phosphotriester pesticides and chemical warfare nerve agents with various efficiencies. The directed evolution of phosphotriesterases to enhance the breakdown of poor substrates is desirable for the purposes of bioremediation. A limiting factor in the identification of phosphotriesterase mutants with increased activity is the ability...

Journal: :Acta Crystallographica Section E Structure Reports Online 2012

2012
Elizaveta A. Trush Oleg V. Shishkin Victor A. Trush Irina S. Konovalova Tetyana Yu. Sliva

The title compound, C(4)H(12)N(+)·C(8)H(11)NO(5)PS(-), was obtained from tetra-methyl-ammonium hydroxide and dimeth-yl(phenyl-sulfon-yl)amido-phosphate. The tetra-methyl-ammonium cation has a slightly distorted tetra-hedral configuration and the N-C bond lengths lie in the range 1.457 (3)-1.492 (3) Å. In the crystal, no classical hydrogen bonds are observed between the cation and the anion.

Journal: :The Journal of biological chemistry 1984
G Lancelot C Hélène

Proton magnetic resonance was used to study the interactions between nucleosides and phosphate monoanion in dimethyl sulfoxide. Ribose was able to form two mutually exclusive 1:1 complexes involving either OH3' and OH5' or OH3' and OH2' as hydrogen bond donor groups. Deoxyribose could form only one of these complexes. A specific interaction of phosphate with the base moiety of nucleosides was o...

Journal: :Surface Science Spectra 2023

The ionic liquid 1,3-dimethyl-imidazolium-dimethylphosphate ([MMIM]+[DMP]−) was analyzed using (hard) x-ray photoelectron spectroscopy. Here, XPS and HAXPES spectra are shown in comparison. For the acquisition of spectra, monochromatic Al Kα radiation at 1486.6 eV used, while for Cr 5414.8 applied. survey scans high-resolution P 2p, 2s, C 1s, O N 1s both methods KL2,3L2,3, KL1L2,3 shown.

2015
Renzhe Qian Alexander Roller Friedrich Hammerschmidt

LiTMP metalated dimethyl N-Boc-phosphoramidates derived from 1-phenylethylamine and 1,2,3,4-tetrahydronaphthalen-1-ylamine highly selectively at the CH3O group to generate short-lived oxymethyllithiums. These isomerized to diastereomeric hydroxymethylphosphonamidates (phosphate–phosphonate rearrangement). However, s-BuLi converted the dimethyl N-Boc-phosphoramidate derived from 1-phenylethylami...

1999
Frank Alber Gerd Folkers Paolo Carloni

Frank Alber,†,‡,§ Gerd Folkers,‡ and Paolo Carloni*,†,§,| International School for AdVanced Studies SISSA/ISAS, Via Beirut 4 I-34014 Trieste, Italy, Department of Pharmaceutical Chemistry, Swiss Federal Institute of Technology (ETH), CH-8057 Zürich, Switzerland, INFM-Istituto Nazionale per la Fisica della Materia, Italy, International Centre for Genetic Engineering and Biotechnology, AREA Scien...

Journal: :Hoppe-Seyler's Zeitschrift fur physiologische Chemie 1982
P A Lazo L Bosca

Conformational changes of hexokinase from ascites tumor cells have been studied by chemical modification of lysine residues with imidoesters with the following results: 1) The membrane-bound enzyme, in contrast to the soluble enzyme, is not inactivated by treatment with dimethyl suberimidate, which suggests (a) lysine residue(s) essential for the activity that is protected in the membrane-bound...

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