Results 41 to 50 of about 9,599 (215)

Controlling the Guanidinium Cation Rotation by Cation–π Interactions

Angewandte Chemie International Edition, EarlyView.
A lanthanide π‐container has been employed to trap a guanidinium cation inside the aromatic cavity by cation–π interactions. X‐ray crystallography and solid‐state nuclear magnetic resonance (NMR) spectroscopy at fast magic‐angle spinning (MAS) frequencies have been utilized to probe the underlying host–guest interactions.
Hannah Busch, Lennart Günzel, Ettore Bartalucci, Robert Schuster, Christian Zocher, Martin Börner, Chandan K. Das, Florian Taube, Björn Corzilius, Maria Fyta, Matthias Ernst, Berthold Kersting, Thomas Wiegand   +12 more
wiley   +1 more source

Synthesis of Ionizable Calix[4]arenes for Chelation of Selected Divalent Cations

Molecules, 2022
Two sets of functionalised calix[4]arenes, either with a 1,3-crown ether bridge or with an open-chain oligo ether moiety in 1,3-position were prepared and further equipped with additional deprotonisable sulfonamide groups to establish chelating systems ...
Markus Blumberg, Karrar Al-Ameed, Erik Eiselt, Sandra Luber, Constantin Mamat   +4 more
doaj   +1 more source

Next Generation Hosts for Protein Recognition, Assembly and More

Chemistry – A European Journal, EarlyView.
The original design of synthetic receptors for proteins was based on macrocycles with a hydrophobic core and a polar/charged periphery. This design, geared towards protein recognition, facilitates receptor self‐assembly. Macrocycle oligomerization, in turn, contributes to protein assembly as evidenced in many cocrystal structures.
Peter B. Crowley
wiley   +1 more source

Cationic Permethylated Cyclodextrins Capable of Self‐Assembling Into Linear Nanostructures in Water

Chemistry – A European Journal, EarlyView.
A quaternary ammonium bridge equipped with a lipophilic substituent in permethylated cyclodextrins suppresses undesired supramolecular interactions and promotes controlled, directional head‐to‐tail self‐assembly into well‐defined linear nanostructures.
Maxime Kolb, Marvin Benjaffel, Peter Faller, Laurent Raibaut, Dominique Armspach   +4 more
wiley   +1 more source

The synthesis and medicinal applications of pyrogallol4arenes [PDF]

, 2006
To date almost all pyrogallol[4]arenes reported in the literature have been prepared from alkyl aldehydes. We were interested in preparing more pyrogallol[4]arenes from commercially available benzaldehydes.
Carey, Stephen
core  

Strontium (II)-Selective Potentiometric Sensor Based on Ester Derivative of 4-tert-butylcalix(8)arene in PVC Matrix

Sensors, 2004
: Membranes of 4-tert-butylcalix(8)arene-octaacetic acid octaethyl ester (I) as an electroactive material, sodium tetraphenyl borate (NaTPB) as an anion excluder, and tri-n-butyl phosphate (TBP) as a solvent mediator in poly(vinyl chloride) (PVC) matrix ...
Jitendra R. Raisoni, Vinod K. Gupta, Ajay K. Jain   +2 more
doaj   +1 more source

Prism[5]MaxQ: A Sulfated Prism[5]Arene and Its Molecular Recognition Properties Toward a Panel of Quaternary Ammonium Guests

Chemistry – A European Journal, EarlyView.
We report the synthesis and characterization of a sulfated prism[5]arene host (Prism[5]MaxQ). Prism[5]MaxQ displays ultrahigh binding affinity (Ka up to 1012 M−1) toward hydrophobic (di)cations in phosphate‐buffered saline (PBS). The work positions Prism[5]MaxQ as a new member of the family of ultrahigh‐affinity hosts poised for use as a sequestrant in
Emmanuel A. Bazan‐Bergamino, Lyle Isaacs   +1 more
wiley   +1 more source

Supramolecular Organocatalysis in Water Mediated by Macrocyclic Compounds

Frontiers in Chemistry, 2018
In the last decades many efforts have been devoted to design supramolecular organocatalysts able to work in water as the reaction medium. The use of water as solvent provides promising benefits with respect to environmental impact.
Margherita De Rosa, Pellegrino La Manna, Carmen Talotta, Annunziata Soriente, Carmine Gaeta, Placido Neri   +5 more
doaj   +1 more source

Exploring Calixarene‐Based Pseudorotaxane Architectures: Threading Ammonium Axles With an Exo‐Rim π‐Functionalized Calix[6]Arene Macrocycle

Chemistry – A European Journal, EarlyView.
This research presents a novel 1,4‐π‐functionalized calix[6]arene with enhanced interactions with dialkylammonium axles. We investigate threading behavior in CDCl3, highlighting how exo‐rim π‐functionalization affects binding affinity and stereoselectivity.
Veronica Iuliano, Paolo Della Sala, Placido Neri, Donato De Simone, Rocco Del Regno, Margherita De Rosa, Carmine Gaeta, Carmen Talotta   +7 more
wiley   +1 more source

Synthetic Ligands of Myeloid C‐Type Lectin Receptors

ChemBioChem, Volume 27, Issue 13, 14 July 2026.
Binding of ligands to C‐type lectin receptors (CLRs) on myeloid cells can lead to an array of cellular responses. Exploitation of these receptors for therapeutic purposes requires high‐affinity ligands. This review surveys the diversity of synthetic ligands of myeloid CLRs in the context of binding, signaling, and downstream effects, as well as ...
James Suri, Bernd Lepenies
wiley   +1 more source