Results 81 to 90 of about 5,412 (216)

Bis-Indole Derivatives for Polysaccharide Compositional Analysis and Chiral Resolution of D-, L-Monosaccharides by Ligand Exchange Capillary Electrophoresis Using Borate-Cyclodextrin as a Chiral Selector

Molecules, 2011
A series of aldo-bis-indole derivatives (aldo-BINs) was prepared by aromatic C-alkylation reactions of aldoses and indole in acetic acid solution. Common monosaccharides such as glucose, mannose, galactose, fucose, xylose, rhamnose, ribose, arabinose and
Wen-Bin Yang, Yin-Chen Liu, Kuo-Shiang Liao, Chien-Yuan Kuo   +3 more
doaj   +1 more source

Improved Achiral and Chiral HPLC-UV Analysis of Ruxolitinib in Two Different Drug Formulations

Separations, 2020
In this paper, two new reversed-phase (RP) HPLC-UV methods enabling the quantitative achiral and chiral analysis of ruxolitinib in commercial tablets (containing 20 mg of active pharmaceutical ingredient, API) and not commercially available galenic ...
Alessandro Di Michele, Aurélie Schoubben, Ina Varfaj, Alessandro D’Arpino, Laura Mercolini, Roccaldo Sardella, Maurizio Ricci, Enrico Tiacci   +7 more
doaj   +1 more source

Chiral near fields generated from plasmonic lattices

, 2014
Plasmonic fields are usually considered non-chiral because of the transverse magnetic polarization of surface plasmon modes. We however show here that an optical lattice created from the intersection of two coherent surface plasmons propagating on a ...
Canaguier-Durand, Antoine, Genet, Cyriaque   +1 more
core   +1 more source

Synthesis and Transformations of Bioactive Scaffolds via Modified Mannich and aza‐Friedel–Crafts Reactions

The Chemical Record, Volume 25, Issue 8, August 2025.
The stabilization of precursors substituted with 2‐, 1‐naphthol via partially aromatic ortho‐quinone methide intermediate was tested with different cyclic imines in [4+2] cycloaddition.8‐Hydroxyquinoline as a formal 1‐naphthol analogue in Mannich reaction was tested.The formed Mannich bases substituted with 2‐ and 1‐naphthol, 5‐chloro‐8 ...
Dóra Hegedűs, Nikoletta Szemerédi, Gabriella Spengler, István Szatmári   +3 more
wiley   +1 more source

Separation of 1,1'-bi-2-naphthol enantiomers by continuous chromatography in simulated moving bed [PDF]

, 1997
The chromatographic separation of 1,1′-bi-2-naphthol enantiomers with 3,5-dinitrobenzoyl phenylglycine bonded to silica gel stationary phases is studied.
Loureiro, José M., Pais, Luís S., Rodrigues, Alírio   +2 more
core   +1 more source

Chiral Cobaltabis(dicarbollide) Catalysts Prepared Using a Silica Helical Nanoplatform for the Enantioselective Photooxidation of Aromatic Secondary Alcohols

Chemistry – A European Journal, Volume 31, Issue 37, July 2, 2025.
Chiral COSAN Nanocatalysts: Enantiopure silica COSAN‐Hybrid nanohelices have been prepared by electrostatic co‐assembly of achiral COSAN anions and silica hybrid nanohelices. Their optical activity was confirmed by CD and ROA measurements. These COSAN‐Hybrids are efficient and recoverable catalysts in the photooxidative kinetic resolution of aromatic ...
Hao Wang, Emilie Pouget, Estelle Morvan, Sonia Buffière, Nicolas Daugey, Yann Danten, Thierry Buffeteau, Reiko Oda, Sylvain Nlate   +8 more
wiley   +1 more source

Application of Biotechnology and Chiral Technology Methods in the Production of Ectoine Enantiomers

Applied Sciences
Natural ectoine, (+)-(4S)-2-methyl-1,4,5,6-tetrahydropyrimidine-4-carboxylic acid, is an extremely important small biomolecule belonging to the class of osmolytic/osmoprotective compounds.
Marcela Šišić, Mladenka Jurin, Ana Šimatović, Dušica Vujaklija, Andreja Jakas, Marin Roje   +5 more
doaj   +1 more source

Monosaccharide-NAIM Derivatives for D-, L-Configurational Analysis

Molecules, 2011
The D-, L-enantiomeric pairs of common monosaccharides (xylose, ribose, rhamnose, arabinose, fucose, glucose, mannose, galactose, N-acetylgalactosamine, glucuronic acid and galacturonic acid) were derivatized with 2,3-naphthalenediamine to form the ...
Chunchi Lin, Chien-Yuan Kuo, Wen-Bin Yang, Kuo-Shiang Liao   +3 more
doaj   +1 more source

Heterociklus egységet tartalmazó koronaéterek szintézise, molekuláris felismerésének tanulmányozása és alkalmazása = Synthesis, molecular recognition studies and application of crown ethers containing heterocyclic units [PDF]

, 2007
A kereskedelemből könnyen beszerezhető, viszonylag olcsó alapanyagokból kiindulva többlépéses szintézissel enantiomertiszta két kiralitáscentrummal rendelkező dimetilpiridino- és dimetilakridino-18-korona-6 éter típusú szelektort állítottunk elő és ...
Bogáti, Botond, Czugler, Mátyás, Huszthy, Péter, Nógrádi, Mihály, Pergel, Éva, Vermes, Borbála   +5 more
core  

Focus on chirality of HIV-​1 non-​nucleoside reverse transcriptase inhibitors [PDF]

, 2016
Chiral HIV-1 non-nucleoside reverse transcriptase inhibitors (NNRTIs) are of great interest since one enantiomer is often more potent than the corresponding counterpart against the HIV-1 wild type (WT) and the HIV-1 drug resistant mutant strains.
Famiglini, Valeria, Silvestri, Romano
core   +2 more sources