Results 111 to 120 of about 21,344 (285)

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

Comprehensive computational design of ordered peptide macrocycles [PDF]

, 2017
Macrocycles by design Macrocyclic peptides have diverse properties, including antibiotic and anticancer activities. This makes them good therapeutic leads, but screening libraries only cover a fraction of the sequence space ...
Matthew D. Shortridge, Timothy W. Craven, Gaurav Bhardwaj, Joshua N. Adkins, Gabriele Varani, David E. Kim, Yehia M. Ibrahim, Parisa Hosseinzadeh, Ian K. Webb, Daniel-Adriano Silva, Vikram Khipple Mulligan, John R. Cort, Stephen A. Rettie, David Baker, Fátima Pardo-Avila   +14 more
core   +1 more source

Macrocyclic Organic Peroxides: Constructing Medium and Large Cycles with O-O Bonds

Chemistry
Macrocycles bridge the gap between conventional small molecules and polymers. Drawing inspiration from successful carbon heteroatom-containing macrocycles, peroxide-containing macrocycles are gaining attention for enhanced bioactivity, potential ...
Yana A. Barsegyan, Vera A. Vil’, Alexander O. Terent’ev   +2 more
doaj   +1 more source

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

Cycloglycolurils: Hybrid Glycoluril–Cyclobenzil Macrocycles [PDF]

Two novel glycoluril macrocycles have been synthesized from cyclotetrabenzil and cyclotribenzoin precursors using solvent-free condensations with urea.
Ognjen Š. Miljanić (1275243), Ashokkumar Basavarajappa (18390834), Xiqu Wang (1644919)   +2 more
core   +1 more source

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

Functionalized Silyl-BINOLs and their Use as Building Blocks for the Synthesis of Chiral Sila-Macrocycles. [PDF]

, 2012
The axially chiral 1,1'-bi-2-naphthol (BINOL) have been used as starting material to produce chiral organosilanes in moderate to excellent yields. Among them, hydrosilanes (S)-6,6'-bis(dimethylsilyl)-2,2'-dimethoxy-1,1'-binaphthyl (26), (S)-3,3'-bis ...
Rivas King, Nelly
core  

Synthesis and crystal structures of 5,17-dibromo-26,28-dihydroxy-25,27-dipropynyloxycalix[4]arene, 5,17-dibromo-26,28-dipropoxy-25,27-dipropynyloxycalix[4]arene and 25,27-bis(2-azidoethoxy)-5,17-dibromo-26,28-dihydroxycalix[4]arene

Acta Crystallographica Section E: Crystallographic Communications
The calixarenes, 5,17-dibromo-26,28-dihydroxy-25,27-dipropynyloxycalix[4]arene (C34H26Br2O4, 1), 5,17-dibromo-26,28-dipropoxy-25,27-dipropynyloxycalix[4]arene (C40H38Br2O4, 2) and 25,27-bis(2-azidoethoxy)-5,17-dibromo-26,28-dihydroxycalix[4]arene ...
Alexander Gorbunov, Stanislav Bezzubov, Maria Malakhova, Vladimir Kovalev, Ivan Vatsouro   +4 more
doaj   +1 more source

Homo‐/Heterodimeric Substrates Bias the Type and Multiplicity of Hydroxamic Acid Chelators Assembled by a NIS Synthetase DesD

Chemistry – A European Journal, EarlyView.
Chemoenzymatic reactions using the siderophore synthetase DesD from Salinispora tropica and hydroxamic acid substrates (native, non‐native) with different multiplicities (monomer, dimer) and components (homo‐/heterodimer) followed different reaction trajectories, which biased the architectures of the chelator major products and indicated DesD contains ...
Callum A. Rosser, Todd E. Markham, Rachel Codd   +2 more
wiley   +1 more source

Synthesis and Functional Properties of Fluorinated Phosphonate‐Substituted Porphyrins: Excellent Photosensitizers and Robust Precursors for Photoactive Langmuir–Schaefer Films

Chemistry – A European Journal, EarlyView.
This is a comprehensive study of new family of high functionalized meso‐tetraarylporphyrins. A synthetic approach to phosphonate‐substituted fluorinated porphyrins was developed. These compounds were investigated with respect to singlet oxygen generation and photostability.
Azhar Kechiche, Cyrille Monnereau, Chantal Andraud, Alla Bessmertnykh‐Lemeune, Yoann Rousselin, Andrey V. Cheprakov, Elizaveta V. Ermakova, Alexandra I. Zvyagina, Habib Nasri   +8 more
wiley   +1 more source