Results 81 to 90 of about 22,451 (231)

Phase‐Transfer‐Catalyzed Interrupted Barton–Zard Reaction Between Electron‐Deficient Indoles and Benzophenone‐Derived Isocyanides

European Journal of Organic Chemistry, EarlyView.
A cascade reaction under phase‐transfer conditions between 3‐nitro indoles and isocyanomethylene dibenzenes affords the construction of pyrrolo[3,4‐b]indole cores. Control experiments provide insight into moderate product yields and clarify why the reaction is not amenable to asymmetric induction. A cascade reaction enabling the construction of pyrrolo[
Ana Mikleušević, Ines Bašić, Mateja Matišić, Josip Rešetar, Matija Gredičak   +4 more
wiley   +1 more source

Quadruplexes In ‘Dicty’: Crystal Structure Of A Four-Quartet G-Quadruplex Formed By G-Rich Motif Found In The Dictyostelium Discoideum Genome [PDF]

, 2018
Guanine-rich DNA has the potential to fold into non-canonical G-quadruplex (G4) structures. Analysis of the genome of the social amoeba Dictyostelium discoideum indicates a low number of sequences with G4-forming potential (249–1055).
Armane, S., Guédin, A., Lacroix, L., Lin, Linda Yingqi, , \u2720, Mergny, J.-L., Thore, S., Yatsunyk, Liliya A.   +6 more
core   +2 more sources

Buck Wheat: Nutritional, Bioactive Characteristics, Health Benefits, and Side Effects

Future Postharvest and Food, EarlyView.
ABSTRACT Micronutrient deficits have resulted from an over‐reliance on a small number of cereal crops for food security. The agricultural sector faces severe sustainability issues due to the rapid growth of the world's population and sudden climatic changes.
Momina Farooq, Sajad Ahmad Mir, Zahida Naseem   +2 more
wiley   +1 more source

Na+-dependent and Na+-independent betaine transport across the apical membrane of rat renal epithelium [PDF]

, 2015
The low renal excretion of betaine indicates that the kidney efficiently reabsorbs the betaine filtered by the glomeruli but the mechanisms involved in such a process have been scarcely investigated.
Calonge Castrillo, María Luisa, Cano Rodríguez, María Mercedes, Ilundáin Larrañeta, María Anunciación Ana   +2 more
core   +1 more source

Exploring the Fragmentation of Sodiated Species Involving Covalent‐Bond Cleavages for Metabolite Characterization

Rapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale Electrospray (ESI), the most popular desorption/ionization technique used in mass spectrometry‐based metabolomics, generates both protonated and deprotonated molecules, as well as adduct ions, sodium being the most frequent monoatomic cation entering their composition.
Annelaure Damont, Ekaterina Darii, Chenqin Cao, Anaïs Legrand, Alain Perret, Sylvain Dechaumet, Amina S. Woods, Christophe Junot, Jean‐Claude Tabet, François Fenaille   +9 more
wiley   +1 more source

D‐amino acid oxidase as a chemogenetic tool for spatiotemporally controlled hydrogen peroxide production: The oxygen connection

British Journal of Pharmacology, EarlyView.
Abstract Background and Purpose D‐amino acid oxidase (DAO) has been developed as a chemogenetic tool, to precisely manipulate redox levels in tissues and cells by generating H2O2 in the presence of D‐amino acids. The enzyme's significant oxygen consumption during H2O2 production may influence cellular oxygen levels.
Wiebke Maurer, Anke Zieseniss, Vamsi Priya Vikram, Yamin Chen, Laura Bauer, Annette Hillemann, Peter Rehling, Maithily S. Nanadikar, Diane de Zélicourt, Vartan Kurtcuoglu, Dörthe M. Katschinski   +10 more
wiley   +1 more source

Tautomeric Equilibria Studies by Mass Spectrometry [PDF]

, 2008
Tautomerism in organic chemistry has been extensively studied in condensed phase by spectrometric methods, mainly by IR and NMR techniques. Mass spectrometry studies start 40 years ago but just recently it has been recognized the importance of the mass ...
Eduardo A. Castro, Jorge J. Furlong, Mercedes M. Schiavonni, Patricia E. Allegretti   +3 more
core   +1 more source

Symmetry Scheme for Amino Acid Codons

, 2003
Group theoretical concepts are invoked in a specific model to explain how only twenty amino acids occur in nature out of a possible sixty four. The methods we use enable us to justify the occurrence of the recently discovered twenty first amino acid ...
F. Zinoni, G. E. Garcia, I. Chambers, J. Balakrishnan, J. E. M. Hornos, J. E. M. Hornos, J. E. M. Hornos, J. F. Atkins, J. L. Cornette, M. Forger, M. J. Berry, R. Slansky   +11 more
core   +1 more source

Delipidisation of wool fibres and the subsequent beneficial properties of delipidised wool fibres

Coloration Technology, EarlyView.
Abstract Wool fibres are complex matrices of proteins and fatty acids/lipids found both internally and externally. 18‐methyleicosanoic acid (18‐MEA) is covalently bound to the surface of the fibre via a thio‐ester link, and is considered one of the most important lipids as it is responsible for the hydrophobic properties of wool fibres.
Jamie A. Hawkes, David M. Lewis
wiley   +1 more source

Synthesis and Spectroscopic Identification Of A New Series Of Biologically Active 2-Iminothiazolidine-4-One Derivatives

Science Journal of University of Zakho, 2014
A series of 2-amino-5-(substituted phenyl) 1,3,4- thiadiazol have been synthesized through the reaction of  thiosemicarbazide with substituted  benzoic acids in the presence of phosphoroxy chloride readily undergo  nucleophilic addition – elimination ...
Hashim J. Azeez, Venos S. Abdulla
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