[EN] COMPOUNDS AND METHODS FOR CONJUGATION OF BIOMOLECULES<br/>[FR] COMPOSÉS ET PROCÉDÉS DE CONJUGAISON DE BIOMOLÉCULES
申请人:LIFE TECHNOLOGIES CORP
公开号:WO2012121973A1
公开(公告)日:2012-09-13
Low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations for modifying biomolecules is provided. Compositions, methods, and kits relating to low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations are also provided.
Clean and green: Copper(I) complexes of phenanthroline‐based ligands anchored on the chitosan polymer are good catalysts for the “click” cycloaddition of azides with terminal alkynes (see scheme; the scanning electron microscopy image shows the porous structure of the catalyst). These heterogeneous catalytic systems do not require a base or reducing agent and operate in alcohol or water.
Copper-catalyzed and copper-free sydnone–alkyne cycloaddition reactions have emerged as complementary click tools for chemical biology but their use in bioorthogonal labeling is still in its infancy. Herein, combinations of alkynes and coumarin-sydnones were screened for their ability to generate pyrazole products displaying strong fluoroscence enhancement compared to reactants. One sydnone was identified
chelation‐assisted copper catalysis was employed for the development of new azides that display unprecedented reactivity in the copper(I)‐catalyzed azide–alkyne [3+2] cycloaddition (CuAAC) reaction. Azides that bear strong copper‐chelating moieties were synthesized; these functional groups allow the formation of azide copper complexes that react almost instantaneously with alkynes under diluted conditions. Efficient
A Highly Efficient Single-Chain Metal–Organic Nanoparticle Catalyst for Alkyne–Azide “Click” Reactions in Water and in Cells
作者:Yugang Bai、Xinxin Feng、Hang Xing、Yanhua Xu、Boo Kyung Kim、Noman Baig、Tianhui Zhou、Andrew A. Gewirth、Yi Lu、Eric Oldfield、Steven C. Zimmerman
DOI:10.1021/jacs.6b04477
日期:2016.9.7
metal-organic nanoparticles (MONPs) are readily synthesized via Cu(II)-mediated intramolecular cross-linking of aspartate-containing polyolefins in water. In situ reduction with sodium ascorbate yields Cu(I)-containing MONPs that serve as highly efficient supramolecular catalysts for alkyne-azide "click chemistry" reactions, yielding the desired 1,4-adducts at low parts per million catalyst levels. The