Results 71 to 80 of about 13,279 (251)

Alkali Metal-Ion Binding by a Model Macrocycle Containing a C-I···N Halogen Bonded Network: A DFT Study of C-I···M⁺ and N···M⁺ Binding Interactions, M⁺ = Li⁺, Na⁺, K⁺, and Rb⁺

Inorganics
The complexation of an alkali metal ion by a model macrocycle is examined using the M05-2X/DGDZVP DFT method. The macrocycle is built by connecting three cyclopenta[b]pyrrole motifs with alternating acetylene and ethylene linkages. Replacing one of the C-
Rubén D. Parra
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Rigid Macrocycle Metal Complexes as CXCR4 Chemokine Receptor Antagonists: Influence of Ring Size

Pharmaceutics
Understanding the role of chemokine receptors in health and disease has been of increasing interest in recent years. Chemokine receptor CXCR4 has been extensively studied because of its defined role in immune cell trafficking, HIV infection, inflammatory
Isaline Renard, Thomas D’huys, Benjamin P. Burke, Trisha Ajoleza, Amy N. Cain, Neil L. Funwie, Abid Khan, Danny L. Maples, Randall D. Maples, Dallas L. Matz, Graeme McRobbie, Robert Ullom, Timothy J. Prior, Douglas P. Linder, Tom Van Loy, Timothy J. Hubin, Dominique Schols, Stephen J. Archibald   +17 more
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Evolutionary, Functional and Mechanistic Characterisation of Microbial Terpene Synthase‐Like Genes From Springtails

Angewandte Chemie International Edition, EarlyView.
A genome analysis revealed the presence of many bacterial‐type terpene synthases in springtails. Four enzymes from Sinella curviseta were functionally characterised, resulting in the isolation of several compounds including sinellene ether, the first diterpene ether identified from a terpene synthase that represents a novel skeleton.
Min Wang, Clement Schneider, Zarley Rebholz, Stefan Schulz, Kathy Darragh, Jeroen S. Dickschat   +5 more
wiley   +1 more source

Parallel Synthesis of Peptide-Like Macrocycles Containing Imidazole-4,5-dicarboxylic Acid

Molecules, 2012
We prepared a series of peptide-like 14-membered macrocycles containing an imidazole-4,5-dicarboxylic acid scaffold by using known coupling reagents and protecting group strategies.
Paul W. Baures, Kraig A. Wheeler, Zhigang Xu   +2 more
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Cycloazulenylene

Angewandte Chemie International Edition, EarlyView.
A strained macrocycle consisting solely of azulene subunits, named [6]cycloparaazulenylene ([6]CPA), is presented. The macrocycle exhibits a notably narrow HOMO–LUMO gap for a pristine azulene species, strain‐induced red‐shifted absorption, and an unusual tubular packing motif elucidated via single‐crystal XRD.
Clara Douglas, Josefine Sprachmann, David Dunlop, Joël Schlecht, Jörg Neudörfl, Tommy Wachsmuth, Julian Frost, Tomáš Slanina, Oliver Dumele   +8 more
wiley   +1 more source

Supramolecular Detoxification Approach of Endotoxin Through Host–Guest Complexation by a Giant Macrocycle

Molecules
In Gram-negative bacteria, lipopolysaccharides (LPSs, also known as endotoxin) can induce extensive immune responses that will enable victims to produce severe septic shock syndrome.
Junyi Chen, Xiang Yu, Shujie Lin, Zihan Fang, Shenghui Li, Liguo Xie, Zhibing Zheng, Qingbin Meng   +7 more
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First Evidence for Ozonido‐TMC Complexes of Iron and Cobalt

Angewandte Chemie International Edition, EarlyView.
Reaction of ozone with iron(II) complexes [(TMC)Fe(OTf)]BArF, [(D12‐TMC)Fe(OTf)]BArF, and cobalt(II) complexes [(TMC)Co(OTf)]BArF, [(D12‐TMC)Co(X)]BArF (X = OTf, F) gives ozonido and oxido complexes at temperatures as low as –155°C in a 4:1 mixture of 2‐Me‐THF and THF. ABSTRACT We present compelling evidence for the first Fe‐ and Co‐ozonido complexes: [
Stefan Schaub, Dennis Gerbig, Raffael C. Wende, Heike Hausmann, Jonathan Becker, Christian Würtele, Laura Senft, Ina Kellner, Gunasekaran Velmurugan, Marion Kerscher, Ivana Ivanović‐Burmazović, Peter Comba, Joshua Telser, Peter R. Schreiner, Siegfried Schindler   +14 more
wiley   +1 more source

Anthropometric Profile and Position-Specific Changes in Segmental Body Composition of Professional Football Players Throughout a Training Period

Sports
Body and anthropometric profiles of football players vary depending on the physiological and technical demands imposed by different positions. The aim of this study was to evaluate the body composition of professional soccer players in relation to their ...
Wiktoria Staśkiewicz-Bartecka, Karolina Krupa-Kotara, Mateusz Rozmiarek, Ewa Malchrowicz-Mośko, Mateusz Grajek, Saioa Agirre Elordui, Jokin Urriolabeitia Razkin, Arkaitz Castañeda Babarro   +7 more
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macrocycle

, 2014
Citation: 'macrocycle' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.M03662 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +2 more sources

Synthesis and Characterization of New Macrocyclic Polyether-Diester Ligands Containing A 4H-Pyran-4-One Subcyclic Unit [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 1999
New macrocyclic polyether-diester ligands (3-5) containing the 4H-pyran-4-one subcyclic unit have been prepared by treating various glycols with dimethyl chelidonate (10).
Aziz Shahrisa, Reza Tabrizi
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