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Formamides (1):
Recent article
Formamides
Acta Radiologica (51)9 2010
Abstract
Severe side effects caused by iodinated radiographic contrast media (CM) are rare, but can occur in high risk patients and during percutaneous coronary intervention. To minimize this risk a new nonionic CM with low inherent osmolality has been designed, giving room for a relatively high concentratio...
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PMID: 20799918
PDF is available here.
PDF is available here.
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Abstract
We investigated the Fourier transform microwave spectra of the hydrated forms of N-methylformamide (NMF) in a supersonic expansion and assigned the rotational spectra of two mono-hydrated species. The conformation of each molecular complex was reliably determined on the basis of the values of the ro...
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PMID: 20657893
PDF is available here.
PDF is available here.
Abstract
Solutions of allyl indium reagents formed in the reactions of indium with allyl bromide and allyl iodide, respectively, in N,N-dimethylformamide, tetrahydrofuran, and water were analyzed by a combination of electrospray-ionization mass spectrometry, temperature-dependent (1)H NMR spectroscopy, and e...
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PMID: 20377261
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (114)14 2010
Abstract
A photoion mass spectrometry study of the prebiotic species formamide was carried out using synchrotron radiation over the photon energy range 10-20 eV. Photoion yield curves were measured for the parent ion and seven fragment ions. The ionization energy of formamide was determined as IE (1(2)A') =...
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PMID: 20085361
PDF is available here.
PDF is available here.
Abstract
The urine concentration of N-acetyl-S-(N-methylcarbamoyl)-cysteine (AMCC), one of the metabolites of DMF, was positively correlated with activities of liver function enzymes. About 60% subjects with urine AMCC concentration above 40 mg/g creatinine showed raised liver enzymes activities. In terms of...
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PMID: 20151308
PDF is available here.
PDF is available here.
Abstract
Our findings suggest no interactive effects of co-exposure to noise, DMF, and toluene on workers' ambulatory blood pressure....
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PMID: 19904656
PDF is available here.
PDF is available here.
Abstract
These results emphasize that the residue situation is clearly underestimated if only the parent compound is targeted, and they reinforce how important it is to include amitraz in the target scope of pesticide residue laboratories, especially since the concentrations detected exceeded the Acute Refer...
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PMID: 20480882
PDF is available here.
PDF is available here.
Abstract
The combination of Zn(OAc)(2) and N,N-dimethylformamide was found to effectively hydrosilylate various ketones at room temperature. Furthermore, our protocol allows the chemoselective reduction of a formyl group in the presence of a ketone group.
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PMID: 20606354
PDF is available here.
PDF is available here.
Abstract
Insulin has been encapsulated in poly(lactic-co-glycolic acid) (PLGA) microspheres by solid-in-oil-in-oil (S/O/O) emulsion technique using DMF/corn oil as new solvent pairs. To get better encapsulation efficiency, insulin nanoparticles were prepared by the modified isoelectric point...
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PMID: 19465100
PDF is available here.
PDF is available here.
Journal of Organic Chemistry (74)15 2009
Abstract
Sequential addition reactions of two molecules of Grignard reagents to thioformamides were found to yield tertiary amines in an efficient manner. The addition of two different Grignard reagents can be accomplished by using one equivalent of arylmagnesium reagent in the first step. In the second step...
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PMID: 19537726
PDF is available here.
PDF is available here.
Abstract
Luminescence enhancement and quenching of Eu(TTA)(3) x 2 H(2)O complex in DMF (N,N-dimethylformamide) solution containing silver nanoparticles were observed, which depended on the concentrations of both europium complex and silver nanoparticles. Their origins were discussed based on absorption spect...
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PMID: 19673573
PDF is available here.
PDF is available here.
Abstract
Combined heat and chemical denaturation of double-stranded DNA scaffold strands in the presence of staple strands, followed by a sudden temperature drop and then stepwise dialysis to remove the chemical denaturant, leads to self-assembly of two distinct DNA-origami structures.
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PMID: 19566089
PDF is available here.
PDF is available here.
The Journal of Chemical Physics (130)20 2009
Abstract
We demonstrate that motional narrowing determines the line shape of the amide I resonance to a large extent. The same analysis provides an estimate of the transition dipole moment of formamide, which results in good agreement with an ab initio calculation. The calculated frequency fluctuation correl...
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PMID: 19485468
PDF is available here.
PDF is available here.
Analytical Biochemistry (390)2 2009
Abstract
We present a novel method using flow cytometry-fluorescence in situ hybridization (flow-FISH) to detect specific messenger RNA (mRNA) in suspended cells using locked nucleic acid (LNA)-modified oligonucleotide probes. beta-Actin mRNA was targeted in whole A549 epithelial cells by hybridization with...
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PMID: 19393610
PDF is available here.
PDF is available here.
Biomaterials (30)9 2009
Abstract
We developed a surface coating technology, enabling the covalent attachment of biomolecules to previously inert metal surfaces. Using horseradish peroxidase as a probe, we demonstrate that the polymerised surface can retain the presentation and activity of an immobilised protein. We further demonstr...
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PMID: 19157535
PDF is available here.
PDF is available here.
Abstract
These results indicate that inhibitors of the synthesis or vasoconstrictor effects of 20-HETE reduce infarct size in rats after cerebral ischemia. The effects of TS-011 are not associated with changes in the area at risk or CBF and may be because of a potential protective effect in neurons subjected...
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PMID: 19107134
PDF is available here.
PDF is available here.
Abstract
The effects of C by N replacement on the intramolecular hydrogen bond of malonaldehyde have been analyzed through the use of B3LYP/6-311++G(3df,2p)//B3LYP/6-311+G(d,p) calculations. Formylformimidic acid (1) exhibits a IMHB much stronger than that of malonaldehyde, reflecting the enhancement of both...
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PMID: 19290322
PDF is available here.
PDF is available here.
Abstract
N,N-Dimethylformamide (DMF), a ubiquitous contaminant in living and working environments, enters the human body by inhalation, as well as by oral and dermal routes of exposure. In order to provide bioassay data for carcinogenic risk assessment of humans exposed to DMF by multiple routes of exposure,...
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PMID: 19182435
PDF is available here.
PDF is available here.
Abstract
Chitosan phenylcarbamate (CtsPC) samples were synthesized to have different degrees of substitution (DS) ranging from approximately 2.7 to approximately 3.7, and the lyotropic liquid crystallinity was mainly characterized by spectrophotometry. The products of DS>2.8 formed a cholesteric type of meso...
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PMID: 19067537
PDF is available here.
PDF is available here.
Electrophoresis (30)2 2009
Abstract
The effect of formamide (FA) as a modifier on the retention in MEKC with SDS as the detergent was investigated. The mobility of a series of alkylphenones and of a zwitterionic fluorescent compound as a function of the FA and the SDS concentration was determined for this purpose. Buffering electrolyt...
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PMID: 19123192
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (112)50 2008
Abstract
We analyze the energy profiles of eight simple molecules (ethane, hydrogen peroxide, hydrazine, methanol, acetaldehyde, formamide, acetamide and N-methylacetamide) subject to rotation around a torsion angle. Coulomb interaction energies between all atom pairs in a molecule are monitored during the r...
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PMID: 18800774
PDF is available here.
PDF is available here.
Abstract
The title compound, C(8)H(9)NO, crystallizes with Z' = 2. Each type of independent molecule links into a separate N-H...O hydrogen-bonded chain in the a-axis direction. There are also three weak C-H...O hydrogen bonds, which join the molecules into a two-dimensional sheet parallel to (001). The mole...
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PMID: 19057074
PDF is available here.
PDF is available here.
Journal of Royal Society Interface (5 Suppl 3) 2008
Abstract
We have used molecular dynamics simulations to study the structure and dynamics of a range of DNA duplexes containing the 2,6-diamino-4-hydroxy-5-formamidopyrimidine (FapydG) lesion that can result from oxidative damage at guanine. Compared to the corresponding undamaged DNA duplexes, FapydG-contain...
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PMID: 18782724
PDF is available here.
PDF is available here.
Abstract
A phosphoramidite reagent of N6-(2-deoxy-D-erythro-pentofuranosyl)-2,6-diamino-1,4-dihydro-4-oxo-5-N-methylformamidopyrimidine (MeFapy-dGuo) lesions was synthesized in four steps from 2'-deoxyguanosine. Fapy nucleosides can rearrange to the pyranose form when the 5'-hydroxyl group is unprotected. The...
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PMID: 19053322
PDF is available here.
PDF is available here.
Abstract
A novel N-formylation and related reactions proceed from cyanides promoted by esters.
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PMID: 18985233
PDF is available here.
PDF is available here.
Abstract
An enantioselective intramolecular Heck-type reaction of chloroformamides has been developed for the synthesis of 3,3-disubstituted piperidones. The desired piperidone was formed in the presence of a palladium catalyst, an optically active phosphoramidite ligand, K3PO4 and Ag3PO4. The obtained piper...
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PMID: 18981607
PDF is available here.
PDF is available here.
Abstract
We propose a new mechanism for dioxygen activation in these heme systems. The mechanism involves (a) direct electrophilic addition of the Fe(II)-bound oxygen to the C2 or C3 position of the indole in a closed-shell singlet state or (b) direct radical addition of the Fe(III)-superoxide to the C2 posi...
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PMID: 18712870
PDF is available here.
PDF is available here.
Abstract
A deep cavitand with an inwardly directed carboxylic acid function reacts with small aliphatic isonitriles to form N-acyl formamides inside the cavity. The unique isolation and stabilization of covalently bound guests within the structured environment of the cavitand allows for observation of the la...
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PMID: 18698780
PDF is available here.
PDF is available here.
Abstract
Vinyl chloride induces hepatic angiosarcomas, which are otherwise rare malignancies. The biochemical basis involves the formation of the epoxide, which reacts with DNA to give approximately 98% of the 7-(2-oxoethyl) adduct (4) of dGuo plus small amounts of the etheno derivatives of dGuo, dCyd, and d...
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PMID: 18690723
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (112)33 2008
Abstract
Cold, isolated peptide model compounds and their aggregates are generated in pulsed supersonic jet expansions and detected by FTIR spectroscopy in the amide-A region, complemented by amide-I spectra. The most stable, symmetric dimer of formamide is unambiguously assigned in the gas phase for the fir...
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PMID: 18665575
PDF is available here.
PDF is available here.
Journal of Hazardous Materials (156)1-3 2008
Abstract
Three weight percent ruthenium catalysts were prepared by incipient-wet impregnation of two different zirconium oxides, and characterized by BET, XRD and TPR. Their activity was evaluated in the catalytic wet oxidation (CWO) of N,N-dimethyl formamide (DMF) in an autoclave reactor. Due to a better di...
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PMID: 18262352
PDF is available here.
PDF is available here.
Abstract
The purge-and-trap (P&T) gas extraction method combined with gas chromatography was studied for its suitability for quantitative residual solvents determination in a water-soluble active pharmaceutical ingredient (API). Some analytical method performance characteristics were investigated, namely, th...
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PMID: 18436411
PDF is available here.
PDF is available here.
Abstract
Degradation of clofarabine (3) in 0.9% saline solution at 100 degrees C afforded three degradation products which were determined to be formamidopyrimidines 4-6. Compounds 4 and 5 were assigned as C(1') anomers on the basis of one-dimensional and two-dimensional NMR experiments, whereas 6 was found...
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PMID: 18696361
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (112)28 2008
Abstract
EOM-CCSD spin-spin coupling constants across hydrogen bonds have been computed for complexes in which NH3, H2O, and FH molecules and their hydrogen-bonded dimers form bridging complexes in the amide region of formamide. The formamide one-bond N-H coupling constant [(1)J(N-H)] across N-H...X hydrogen...
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PMID: 18570358
PDF is available here.
PDF is available here.
Journal of Biological Chemistry (283)29 2008
Abstract
The Saccharomyces cerevisiae DGK1 gene encodes a diacylglycerol kinase enzyme that catalyzes the formation of phosphatidate from diacylglycerol. Unlike the diacylglycerol kinases from bacteria, plants, and animals, the yeast enzyme utilizes CTP, instead of ATP, as the phosphate donor in the reaction...
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PMID: 18458076
PDF is available here.
PDF is available here.
Abstract
Reaction of n-butyltin trichloride [(n-Bu)SnCl(3)] with 2-pyridineformamide thiosemicarbazone (H2Am4DH) and its N(4)-methyl (H2Am4Me) and N(4)-ethyl (H2Am4Et) derivatives gave [(n-Bu)Sn(2Am4DH)Cl(2)] (1), [(n-Bu)Sn(2Am4Me)Cl(2)] (2), and [(n-Bu)Sn(2Am4Et)Cl(2)] (3). Thiosemicarbazones as well as the...
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PMID: 17983689
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (112)24 2008
Abstract
We computationally designed a molecule ( FAO- BH 3 ) to increase H-bond energy. Because of the oxygen lone pair donation to the empty pi orbital of BH 3, FAO- BH 3 has a much stronger resonance effect than FAO. As a result, the H-bond energy (-5.55 kcal/mol) in HD H 2O ... FAO- BH 3 complex is much...
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PMID: 18503289
PDF is available here.
PDF is available here.
Journal of Hazardous Materials (154)1-3 2008
Abstract
Extracellular polymeric substances (EPS) were extracted from aerobic granules of compact interior structure using seven extraction methods. Ultrasound followed by the chemical reagents formamide and NaOH outperformed other methods in extracting EPS from aerobic granules of compact interior. The coll...
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PMID: 18162303
PDF is available here.
PDF is available here.
Journal of Physical Chemistry B (112)22 2008
Abstract
A computational strategy based on quantum mechanical (QM) calculations and continuum solvation models is used to investigate the structure of liquids (either neat liquids or mixtures). The strategy is based on the comparison of calculated and experimental spectroscopic properties (IR-Raman vibration...
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PMID: 18461992
PDF is available here.
PDF is available here.
Journal of Organic Chemistry (73)11 2008
Abstract
Asymmetric reduction of ketimines 1a-e with trichlorosilane can be catalyzed by the N-methylvaline-derived Lewis basic formamide anchored to a polymeric support (5a and 5b) with good enantioselectivity (< or =82% ee) and low catalyst loading (typically 15 mol %) at room temperature. This protocol re...
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PMID: 18444681
PDF is available here.
PDF is available here.
Abstract
AFM probing of microbial cells in liquid environments usually requires them to be physically or chemically attached to a solid surface. The fixation mechanisms may influence the nanomechanical characterization done by force curve mapping using an AFM. To study the response of a microbial cell surfac...
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PMID: 18166445
PDF is available here.
PDF is available here.
Abstract
We describe here an improved method for isolating, purifying, and cloning DNA from diverse soil microbiota. Soil microorganisms were extracted from soils and embedded and lysed within an agarose plug. Nucleases that copurified with the metagenomic DNA were removed by incubating plugs with a high-sal...
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PMID: 18359830
PDF is available here.
PDF is available here.
Biological Chemistry (389)5 2008
Abstract
The enzymatic activity of Paracoccus denitrificans cytochrome c oxidase (COX) and Escherichia coli cytochrome b(o) ubiquinol oxidase (QOX) was determined in the presence of formamide, N,N-dimethyl formamide and N,N-dimethyl acetamide. Formamide was found to inhibit the enzyme activity of the oxidase...
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PMID: 18953727
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (112)16 2008
Abstract
Electric field (EF) induced changes of one-bond indirect spin-spin coupling constants are investigated on a wide range of molecules including peptide models. EFs were both externally applied and internally calculated without external EF application by the hybrid density functional theory method. Rel...
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PMID: 18363392
PDF is available here.
PDF is available here.
Abstract
I (Klenow exo(-)) misincorporated dA most frequently opposite beta-C-Fapy x dG, but its efficiency was <0.2% of dC insertion. Klenow exo(-) fidelity was enhanced by the enzyme's high selectivity for extending duplexes only when dC was opposite beta-C-Fapy x dG. The expectations raised by these in vi...
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PMID: 18242999
PDF is available here.
PDF is available here.
Toxicological Sciences (102)2 2008
Abstract
A large number of databases are currently being implemented within toxicology aiming to integrate diverse biological data, such as clinical chemistry, expression, and other types of data. However, for these endeavors to be successful, tools for integration, visualization, and interpretation are need...
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PMID: 18178960
PDF is available here.
PDF is available here.
Abstract
Our results suggest that, although both factors may be operating simultaneously, in CH(2)Cl(2) solution the balance of these counterpoising effects favors the formation of the trans isomer....
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PMID: 17822950
PDF is available here.
PDF is available here.
Abstract
We investigated the influence of the reduction state of gold ions on the growth of gold nanocrystals in N,N-dimethyl formamide (DMF). While freshly prepared solutions of AuCl3 produce spherical nanocrystals, aged precursor solutions containing mainly Au+ ions and Au(0) atoms lead to various branched...
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PMID: 18259633
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (112)4 2008
Abstract
The vibrational motions of the model peptide unit represented by the main-chain carbonyl carbon, oxygen, nitrogen, and amide hydrogen are analyzed quantum-mechanically using formamide, cis-N-methylformamide, trans-N-methylformamide, N,N-dimethylformamide, l-alanyl-l-alanine, and N-benzoylphenylalani...
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PMID: 18177024
PDF is available here.
PDF is available here.
Water Research (42)3 2008
Abstract
A weak-base anion exchange fiber named FVA with primary amino groups for selective and rapid removal of arsenate species was prepared by means of electron irradiation induced liquid phase graft polymerization of N-vinylformamide onto polyethylene coated polypropylene fibers and by the subsequent alk...
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PMID: 17959217
PDF is available here.
PDF is available here.
Abstract
Under conditions of oxidative stress, the formamidopyrimidine lesions (FapyG and FapyA) are formed in competition with the corresponding 8-oxopurines (OG and OA) from a common intermediate. In order to reveal features of the repair of these lesions, and the potential contribution of repair in mitiga...
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PMID: 18154319
PDF is available here.
PDF is available here.
Abstract
Abstract
The Journal of Chemical Physics (127)23 2007
Abstract
The short-time photodynamics (1 ps) of formamide in its low-lying singlet excited n(O)-pi(*) and pi-pi(*) states have been investigated by the direct trajectory surface-hopping method based on multiconfigurational ab initio calculations. The simulations showed that in both states, the primary deacti...
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PMID: 18154378
PDF is available here.
PDF is available here.
Science of the Total Environment (388)1-3 2007
Abstract
N,N-dimethylformamide (DMF) could be readily absorbed via skin and inhalation routes. It is difficult, however, to separate the internal dose contribution from skin vapor and inhalation exposure. This study attempts to quantitatively determine the separate skin vapor and inhalation exposure contribu...
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PMID: 17854864
PDF is available here.
PDF is available here.
Journal of Organic Chemistry (72)25 2007
Abstract
Reaction of 96% formic acid with isocyanates derived from N-Fmoc alpha-amino acids/peptide acids catalyzed by DMAP has yielded a new class of stable formamides as crystalline solids which have been characterized by IR, 1H NMR, 13C NMR, and mass spectroscopy. Conversion of the side chain carboxylic a...
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PMID: 17999520
PDF is available here.
PDF is available here.
Neuroscience Research (59)4 2007
Abstract
We evaluated the long-term effects of TS-011 when administered as in this pharmacodynamics study. The major findings of the present study are as follows: (1) brain 20-HETE levels increased significantly within 7.5h after MCAO; (2) TS-011 at doses of 0.1 and 0.3mg/kg administered at regular 6-h inter...
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PMID: 17933409
PDF is available here.
PDF is available here.
Theriogenology (68)8 2007
Abstract
The objectives of this study were to determine the effect of cryoprotectants on sperm viability and develop a freezing protocol for long-term storage of P. monodon spermatophores. Spermatophores suspended for 30 min in calcium-free saline (Ca-F saline) containing the cryoprotectants dimethyl sulfoxi...
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PMID: 17900683
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (111)42 2007
Abstract
The dimerization of formamide (FMA) has been investigated by matrix isolation spectroscopy, static ab initio calculations, and ab initio molecular dynamics (AIMD) simulations. Comparison of the experimental matrix IR spectra with the ab initio calculations reveals that two types of dimers A and C ar...
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PMID: 17887658
PDF is available here.
PDF is available here.
Abstract
N,N-Dimethylformamide (DMF) is a well-known chemical entity that is extensively used for pharmaceutical, biomedical and chemical applications. Previous research identified the need for the development of an effective dosage form for the systemic delivery of DMF due to its unique antiviral properties...
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PMID: 18236775
PDF is available here.
PDF is available here.