Results 121 to 130 of about 35,698 (262)

N‐Glycosyl Triazoline Glycomimetics via Huisgen Cycloaddition With an Electron‐Deficient Alkene and BF3‐Catalysed Triazoline Fragmentation to Aziridines

European Journal of Organic Chemistry, EarlyView.
Glycomimetics with triazoline and aziridine groups were synthesised via diastereoselective Huisgen cycloaddition from glycosyl azides. Density functional theory was applied to define the mechanism for BF3 promoted aziridine formation. Triazoline and aziridine derivatives were synthesised by diastereo‐ and regioselective Huisgen cycloaddition of 2,3,4,6‐
Aaron McCormack, Ashis Dhara, Lamis Alaa Eldin Refat, Mikael Bols, Paul V. Murphy   +4 more
wiley   +1 more source

The use of 31P NMR and principal components analysis to determine sameness or differences between diastereomeric composition of phosphorothioate oligonucleotides

Talanta Open
Synthetic oligonucleotides often contain chemically modified backbones to prevent degradation and improve bioactivity. Phosphorothioate (PS) linkage in place of phosphodiester is the most used one.
Luca Gherardi, Francesca Viti, Salvatore Demartis, Marie McNulty, Giovanni Monteleone, Lorenzo Di Bari   +5 more
doaj   +1 more source

Probing the Human Estrogen Receptor-α Binding Requirements for Phenolic Mono- and Di-Hydroxyl Compounds: A Combined Synthesis, Binding and Docking Study [PDF]

, 2014
Various estrogen analogs were synthesized and tested for binding to human ERα using a fluorescence polarization displacement assay. Binding affinity and orientation were also predicted using docking calculations.
Donaldson, William A., Gone, Jayapal Reddy, He, Zhengjie, Herrild, Christian, Lukesh, Julie, McCullough, Christopher, Neumann, Terrence S., Pandey, Rajesh K., Sem, Daniel S.   +8 more
core   +1 more source

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

European Journal of Organic Chemistry, EarlyView.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer, Jun Fang, Chonghuo Liu, Guillaume Lefèvre, Gérard Guillamot, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +6 more
wiley   +1 more source

Stereoselective Synthesis of Glycomimetic Amines From Biomass‐Derived Cyrene

European Journal of Organic Chemistry, EarlyView.
2,3,4‐Trideoxy‐2‐mannosamines, including the unsubstituted one, are accessible as the only endo diastereoisomers by reductive amination of the green solvent Cyrene, derived from pyrolysis of cellulose containing waste biomass. The products are useful chiral synthetic intermediate to nitrogenated glycomimetics.
Debora Pratesi, Marta Rigacci, Francesca Cardona, Camilla Matassini, Andrea Goti   +4 more
wiley   +1 more source

Dearomatization with Axial‐to‐Central Chirality Conversion

European Journal of Organic Chemistry, EarlyView.
Atropisomers are exciting synthetic targets with unique properties, which find applications in many fields of chemistry. However, considering them as substrates is not very frequent, notably in the context of dearomatization reaction. We wish to discuss the different strategies for the dearomatization of aromatic atropisomers with axial‐to‐central ...
Morgane Mando, Clément Lemaitre, Thierry Constantieux, Xavier Bugaut   +3 more
wiley   +1 more source

3-Methyl 5-[(S)-2-methylbutyl] 4-[2-(difluoromethoxy)phenyl]-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate [PDF]

, 2002
Franssen, M.C.R., Jongejan, H., Kooijman, H., Sobolev, A., Spek, A.L.   +4 more
core   +3 more sources

Hofmann Degradation of Asparagine and Glutamine as an Efficient Approach for the Synthesis of Derivatized Lysine Homologs

European Journal of Organic Chemistry, EarlyView.
A practical and scalable route to C1 and C2 lysine homologs has been developed using Hofmann degradation of N‐protected L‐asparagine and L‐glutamine as the key step. These short‐tether scaffolds enable efficient synthesis of diverse Fmoc‐protected noncanonical amino acids (ncAAs) bearing donor, acceptor, redox‐active, and fluorescent residues.
Adelaide R. Mashweu, François J. De Beer, Jolien Bertouille, Steven Ballet, Charlotte Martin, Ulrich Hennecke, Charlene Marais, Vladimir A. Azov   +7 more
wiley   +1 more source

PROTAC diastereomer Design（negative control） v1

, 2022
Diastereomers are stereoisomers in which molecules have two or more chiral centers and the relationship between molecules is not mirrored. In PROTAC drug development, in order to evaluate the pharmacokinetics of a single diastereomer or mixture of diastereomers, manufacturers should quantitatively analyze samples from the early stages of drug ...
openaire   +1 more source

Dynamic Kinetic Resolution of Axially Chiral Heterobiaryl N‐Oxides via Peptide‐Catalyzed Aldol Reaction

European Journal of Organic Chemistry, EarlyView.
Resin‐supported tripeptide achieved the dynamic kinetic resolution in the catalytic aldol reaction of formylated heterobiaryl N‐oxides with high efficiency and enantioselectivity. The system features a broad substrate scope and a recyclable catalyst.
Jiaqi Tian, Isao Yoshikawa, Akihiro Sakama, Kazuaki Kudo   +3 more
wiley   +1 more source