928838-29-3Relevant academic research and scientific papers
Quantitative analysis of Cu(I) concentration in click chemistry -biotinylation at side chain of propargylglycine using click chemistry under heating conditions
Ogasawara, Yui,Murai, Yuta,Sakihama, Yasuko,Hashidoko, Yasuyuki,Hashimoto, Makoto
, p. 735 - 743 (2012)
The click reaction is one of the latest techniques for the chemical modification of bioactive compounds. Chemical modifications of α-amino acid side chains are gaining significance as useful and important tools for biochemical research. Biotinylation at s
Synthesis of new protected azahistidine, their processes and their use in synthesises
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Page/Page column 8-11, (2010/08/07)
The synthesis of various protected azahistidine derivatives are obtained via 1,3-dipolar cycloaddition reactions. The newly obtained amino acids can in particular be selectively deprotected either at the side chain or at the N-terminus of the amino acid a
Synthesis of orthogonally protected azahistidine: Application to the synthesis of a GHK analogue
Roux, Stephane,Ligeti, Melinda,Buisson, David-Alexandre,Rousseau, Bernard,Cintrat, Jean-Christophe
experimental part, p. 279 - 286 (2010/08/21)
The synthesis of various orthogonally protected azahistidine derivatives are obtained via 1,3-dipolar cycloaddition reactions. The newly obtained amino-acids can be selectively deprotected either at the side chain or at the N-terminus of the amino acid and should thus allow the use of these derivatives in (solid phase) peptide synthesis.
Click-to-chelate : Design and incorporation of triazole-containing metal-chelating systems into biomolecules of diagnostic and therapeutic interest
Struthers, Harriet,Spingler, Bernhard,Mindt, Thomas L.,Schibli, Roger
experimental part, p. 6173 - 6183 (2009/05/27)
The site-specific conjugation of metal chelating systems to biologically relevant molecules is an important contemporary topic in bioinorganic and bioorganometallic chemistry. In this work, we have used the Cu'-catalyzed cycloaddition of azides and terminal alkynes to synthesise novel ligand systems, in which the 1,2,3-triazole is an integral part of the metal chelating system. A diverse set of bidentate alkyne building blocks with different aliphatic and aromatic backbones and various donor groups were prepared. The bidentate alkynes were reacted with benzyl azide in the presence of a catalytic amount of Cu 1 to form tridentate model ligands. The chelators were reacted with [ReBr3(CO)3]2- to form well-defined and stable complexes with different overall charges, structures and hydrophilicities. In all cases tridentate coordination of the ligands, including through N3 of the 1,2,3-triazole ring, was observed. The ligand systems could also be quantitatively radiolabelled with the precursor [99mTc (H 2O)3(CO)3]+ at low ligand concentrations. Similarly the alkynes were reacted with an azido thymidine derivative to form a series of compounds, which could be radiolabeled in situ to form single products. Subsequent incubation of the neutral and cationic organometallic 99mTc thymidine derivatives with human cytosolic thymidine kinase, a key enzyme in tumour proliferation, revealed that only the neutral compounds maintained substrate activity towards the enzyme. Bioconjugation, radiolabelling and enzymatic reactions were successfully performed in a matter of hours. Thus, click chemistry provides an elegant method for rapidly functionalising a biologically relevant molecule with a variety of efficient metal chelators suitable for (radiolabelling with the M(CO) 3 core (M = 99mTc, Re), to offer new potential for technetium-99m in clinical and preclinical tracer development.
