Relevant bibliographies by topics / Cage-amine

Academic literature on the topic 'Cage-amine'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Cage-amine"

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Long, Augustin, Olivier Perraud, Erwann Jeanneau, Christophe Aronica, Jean-Pierre Dutasta, and Alexandre Martinez. "A hemicryptophane with a triple-stranded helical structure." Beilstein Journal of Organic Chemistry 14 (July 24, 2018): 1885–89. http://dx.doi.org/10.3762/bjoc.14.162.

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A hemicryptophane cage bearing amine and amide functions in its three linkers was synthesized in five steps. The X-ray molecular structure of the cage shows a triple-stranded helical arrangement of the linkers stabilized by intramolecular hydrogen bonds between amide and amine groups. The chirality of the cyclotriveratrylene unit controls the propeller arrangement of the three aromatic rings in the opposite part of the cage. 1H NMR studies suggest that this structure is retained in solution.
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Koutsantonis, George A., Gareth L. Nealon, Craig E. Buckley, Mark Paskevicius, Laurent Douce, Jack M. Harrowfield, and Alasdair W. McDowall. "Wormlike Micelles from a Cage Amine Metallosurfactant." Langmuir 23, no. 24 (November 2007): 11986–90. http://dx.doi.org/10.1021/la701283b.

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Ma, Michelle T., Margaret S. Cooper, Rowena L. Paul, Karen P. Shaw, John A. Karas, Denis Scanlon, Jonathan M. White, Philip J. Blower, and Paul S. Donnelly. "Macrobicyclic Cage Amine Ligands for Copper Radiopharmaceuticals: A Single Bivalent Cage Amine Containing Two Lys3-bombesin Targeting Peptides." Inorganic Chemistry 50, no. 14 (July 18, 2011): 6701–10. http://dx.doi.org/10.1021/ic200681s.

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Modak, Ritwik, Bijnaneswar Mondal, Prodip Howlader, and Partha Sarathi Mukherjee. "Self-assembly of a “cationic-cage” via the formation of Ag–carbene bonds followed by imine condensation." Chemical Communications 55, no. 47 (2019): 6711–14. http://dx.doi.org/10.1039/c9cc02341k.

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We develop a new strategy for the synthesis of a “cationic-cage” (CC-Ag) via metal–carbene (M–CNHC) bond formation followed by imine condensation. While the aldehyde alone doesn’t yield the desired cage with the amine, Ag–NHC bond formation allows such condensation, leading to the formation of a “cationic-cage”.
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Rivera, Augusto, Martı́n E. Núñez, Martha S. Morales-Rı́os, and Pedro Joseph-Nathan. "Preparation of cage amine 1,3,6,8-tetraazatricyclo[4.3.1.13,8]undecane." Tetrahedron Letters 45, no. 41 (October 2004): 7563–65. http://dx.doi.org/10.1016/j.tetlet.2004.08.123.

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Hong, Dae Ho, Brian J. Knight, Vincent J. Catalano, and Leslie J. Murray. "Isolation of chloride- and hydride-bridged tri-iron and -zinc clusters in a tris(β-oxo-δ-diimine) cyclophane ligand." Dalton Transactions 48, no. 26 (2019): 9570–75. http://dx.doi.org/10.1039/c9dt00799g.

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Smith, Paul H., Zelideth E. Reyes, Chi Woo Lee, and Kenneth N. Raymond. "Characterization of a series of lanthanide amine cage complexes." Inorganic Chemistry 27, no. 23 (November 1988): 4154–65. http://dx.doi.org/10.1021/ic00296a015.

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Klein, Liv B., Thorbjørn J. Morsing, Ruth A. Livingstone, Dave Townsend, and Theis I. Sølling. "The effects of symmetry and rigidity on non-adiabatic dynamics in tertiary amines: a time-resolved photoelectron velocity-map imaging study of the cage-amine ABCO." Physical Chemistry Chemical Physics 18, no. 14 (2016): 9715–23. http://dx.doi.org/10.1039/c5cp07910a.

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The non-adiabatic relaxation dynamics of the tertiary cage-amine azabicyclo[2.2.2]octane (ABCO) have been investigated following 3p Rydberg excitation at 201 nm using femtosecond time-resolved photoelectron imaging.
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Geue, RJ, P. Osvath, AM Sargeson, KR Acharya, SB Noor, TNG Row, and K. Venkatesan. "The Reaction of a Nitro-Capped Cobalt(III) Cage Complex With Base: the Crystal Structure of a Contracted Cage Complex, and the Mechanism of Its Formation." Australian Journal of Chemistry 47, no. 3 (1994): 511. http://dx.doi.org/10.1071/ch9940511.

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The synthesis, properties and crystal structure of the cage complex (1-hydroxy-8-methyl-3,6,10,13,15,18-hexaazabicyclo[6.6.5] nonadecane )cobalt(III) chloride hydrate ([Co( Me,OH-absar )]Cl3.H2O) are reported. The mechanism of the formation of this contracted cavity cage from a nitro-capped hexaazabicycloicosane type cage has been investigated. Treatment of (1- methyl-8-nitro-3,6,10,13,16,19-hexaazabicyclo[6.6.6] icosane )cobalt(III) chloride ([Co(Me,NO2- sar )]3+) with excess base in aqueous solution leads initially to rapid (t½. < 1 ms) and reversible deprotonation of one coordinated secondary amine. This species undergoes a retro-Mannich type reaction and imine hydrolysis (t½ ≈ 90 s). Quenching the reaction with acid gives rise to a pair of isomeric intermediate species which have been isolated and characterized. They have a pendant arm macrocyclic structure, resulting from the loss of a methylene unit from one of the arms of the cap. Heating either isomer in aqueous solution gives the new cage compound with the contracted cap. It is postulated that this occurs through a Nef reaction, resulting in the formation of a ketone which then condenses with the coordinated primary amine. A comparison with the corresponding bicycloicosane analogue indicates a reduced chromophoric cavity size for the contracted cage. The reduction potential of the cobalt(III)/cobalt(II) couple is 170 mV more negative for the smaller cage, and, in the electronic spectrum of the cobalt(III) complex, the d-d transitions are both shifted to higher energy, corresponding to a stronger ligand field.
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Acharyya, Koushik, and Partha Sarathi Mukherjee. "Shape and size directed self-selection in organic cage formation." Chemical Communications 51, no. 20 (2015): 4241–44. http://dx.doi.org/10.1039/c5cc00075k.

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[3+2] self-assembly of an unsymmetrical aldehyde and a flexible amine yielded a single isomeric cage out of two possible isomeric cages. The experimental and theoretical findings suggest that the geometric features of the aldehyde play a key role in such self-selection.
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Dissertations / Theses on the topic "Cage-amine"

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Lengkeek, Nigel Andrew. "Functional cage-amine complexes : polymerisable metallomonomers and multi-cage complexes." University of Western Australia. School of Biomedical, Biomolecular and Chemical Sciences, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0138.

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[Truncated abstract] Chapter 1 provides an introduction to the 'sarcophagine' class of ligands and the field of metallopolymers. The synthesis, stereochemistry, physical properties and functionalisation of 'sarcophagines' and their metal complexes are discussed. A brief overview of the burgeoning field of metallopolymers is given with specific mention of the synthetic routes to pendant metallopolymers, and how these could be employed to prepared cage amine containing metallopolymers. Chapter 2 deals with the synthesis, characterisation and reactivity of cinnamylamino and styrylamido derivatives of the cage amines [Co((NH2)2sar)]3+, [Co((CH3)(NH2)sar)]3+ and [Cu((NH2)2sar)]2+. The cinnamylamino derivatives were prepared using reductive alkylation of the aforementioned amines with cinnamaldehyde. Procedures were developed to isolate the complexes without causing unwanted additions to the double bond. The cinnamylamino derivatives displayed unexpected reactivity towards a range of reducing agents, resulting in unexpected reduction of the double bond and cleavage of the cinnamyl group, but ultimately in the preparation of phenylpropylamino derivatives of [Co((NH2)2sar)]3+ and [Co((CH3)(NH2)sar)]3+. Attempts to rationalise the reactivity of the double bond have been explored based upon the physical properties and reactivity of the double bond. The styrylamido derivatives were prepared by treatment of the cage amines with 4-vinylbenzoyl chloride, and the complexes isolated in a similar manner to those of the cinnamylamino derivatives to ensure the amide linkage remained intact. Most of the complexes have been structurally characterised. ... Both the 2-thienyl and 3-thienyl derivatives of [Co((NH2)2sar)]3+ and [Co((CH3)(NH2)sar)]3+ have been prepared using reductive alkylation with the respective carboxaldehydes of thiophene. One of the optically pure isomers has been prepared. The complexes have been fully characterised including structural characterisation. Polymerisation of the thiophene-cage amine complexes was investigated under a range of chemical and electrochemical conditions, though polymerisation was never observed. Cleavage of the thienyl groups was observed when ceric ammonium nitrate in nitric acid was used as the oxidant. The attachment of oligothiophenes and mixed pyrrole-thiophene oligomers to cage amines were investigated using reductive alkylation and various pyrrole ring-forming reactions about the apical amino groups, though none of the desired complexes were isolated, reasons for the lack of reactivity were discussed. An efficient synthesis of N-(4-benzoic acid)- 2,5-di(2-thienyl)pyrrole was developed and was shown to the electropolymerisable, albeit the polymer films were non-conducting. Attempts to couple N-(4-benzoic acid)- 2,5-di(2-thienyl)pyrrole with a cage amine via its acid chloride were complicated by decomposition reactions, the nature of one of these products is discussed. Chapter 5 presents investigations into the preparation of simple complexes containing multiple cage amines using alkylation and acylation procedures with aromatic substrates. The complexes were found to exhibit some interesting electrochemical and chemical properties, demonstrating that even simple multiple cage amine species can display complicated and interesting behaviour.
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Nealon, Gareth L. "Substituted cage amines : towards new functional metalloassemblies." University of Western Australia. School of Biomedical and Chemical Sciences, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0215.

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Ma, Michelle Therese. "Coordination of transition metals to peptides : (i) ruthenium and palladium metal clips that induce pentapeptides to be [alpha]-helical in water : (ii) synthesis of peptides incorporating a cage amine ligand for chelation of copper radioisotopes /." Connect to thesis, 2010. http://repository.unimelb.edu.au/10187/6715.

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Ma, Michelle Therese. "Coordination of transition metals to peptides: (i) Ruthenium and palladium metal clips that induce pentapeptides to be α-helical in water; (ii) Synthesis of peptides incorporating a cage amine ligand for chelation of copper radioisotopes." 2010. http://repository.unimelb.edu.au/10187/6715.

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Coordination of transition metals to peptides, either through the incorporation of unnatural chelating groups or amino acid ligating side-chains, expands the utility of peptides for biological studies. The first part of this project describes induction of α-helical secondary structure in pentapeptides upon side-chain coordination of inert transition metal ions. The second part of this project describes the syntheses of biologically active peptide species that contain a macrobicyclic hexaamine ligand that can complex radioactive metal ions for diagnostic imaging purposes.
Short peptide sequences do not form thermodynamically stable α-helices in water. The capacity of two metal clips, cis-[Ru(NH3)4(solvent)2]2+ and cis [Pd(en)(solvent)2]2+ to induce α-helicity in peptides that are five amino acids long, Ac HARAH NH2 and Ac MARAM-NH2 has been explored. In all cases at pH < 5, the metal ions bind to the side-chains of amino acid residues at positions i, i+4 of the pentapeptides resulting in formation of bidentate macrocyclic species. Circular dichroism and 1H nuclear magnetic resonance data indicate that the metal complexes of Ac-MARAM-NH2 are highly α helical in water, and in the most spectacular case, coordination of Ac-MARAM-NH2 to cis-[Ru(NH3)4(solvent)2]2+ results in up to 80% α-helicity. In contrast, metal complexes of Ac-HARAH-NH2 exhibit significantly less α-helicity in water.
64Cu-radiolabelled peptides have been investigated for their ability to target specific tissue or cell types. These peptides require a chelating group that binds copper ions strongly. Macrobicyclic hexaamine ligands, based on the compound commonly referred to as “sarcophagine”, have demonstrated extremely high stability under biological conditions. Here we describe the synthesis of diaminosarcophagine chelators with carboxylate groups for conjugation to peptides. These new chelators have been attached to the N-terminus or lysine side-chain of biologically-active peptides, including Tyr3 octreotate, Lys3-bombesin and an integrin targeting peptide. Spectroscopic and voltammetric studies of these species suggest that the conjugated sarcophagine group retains the high metal binding affinity and structural properties of the parent species, diaminosarcophagine. These are among the first sarcophagine-peptide compounds that have been properly characterised. The new sarcophagine-peptide conjugates can be easily radiolabelled with 64Cu2+ over a wide pH range at ambient temperature.
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