Efficient formation of water- and air-stable aza-ylides has been achieved using the Staudinger reaction between electron-deficient aromatic azides such as 2,6-dichlorophenyl azide and triarylphosphines. The reaction proceeds rapidly and has been successfully applied to chemical modification of proteins in living cells.
Novel Heterobimetallic Radiotheranostic: Preparation, Activity, and Biodistribution
作者:Louis Adriaenssens、Qiang Liu、Fanny Chaux-Picquet、Semra Tasan、Michel Picquet、Franck Denat、Pierre Le Gendre、Fernanda Marques、Célia Fernandes、Filipa Mendes、Lurdes Gano、Maria Paula Cabral Campello、Ewen Bodio
DOI:10.1002/cmdc.201300494
日期:2014.7
The resulting heterobimetallic complex exhibits favorable solubility and stability properties in biologically relevant media. It also shows in vitro cytotoxicity in line with that expected for this type of metallodrug, and is nontoxic to the organism as a whole. As a proof of concept, initial studies in healthy mice were performed to obtain information about the uptake, biodistribution, and excretion
Modular Assembly of a Pd Catalyst within a DNA Scaffold for the Amplified Colorimetric and Fluorimetric Detection of Nucleic Acids
作者:Deepak K. Prusty、Minseok Kwak、Jur Wildeman、Andreas Herrmann
DOI:10.1002/anie.201206006
日期:2012.11.19
Phosphine ligands were covalently tethered to short oligonucleotide strands such that active palladium complexesformed in the presence of a specific nucleic acid target. This catalytic center on the double‐stranded DNA then converted water‐soluble iodo‐BODIPY dyes, present in excess, into highly emissive deiodinated reporters (see picture). This approach is suitable for the rapid colorimetric or fluorimetric
膦配体与短寡核苷酸链共价连接,从而在特定核酸靶标存在的情况下形成活性钯复合物。然后,双链 DNA 上的催化中心将过量存在的水溶性碘-BODIPY 染料转化为高发射性脱碘报告基因(见图)。这种方法适用于快速比色或荧光检测的核酸靶只有10 p的检测下限中号。
Improving reactivity and selectivity of aqueous-based Heck reactions by the local hydrophobicity of phosphine ligands
作者:Gina M. Roberts、Shiyong Zhang、Yan Zhao、L. Keith Woo
DOI:10.1016/j.tet.2015.09.010
日期:2015.10
affords a new ligand, 1, which is effective in palladium-catalyzedHeck cross-couplings between acrylates and aryl iodides under mild, aqueous reaction conditions. High yields, up to 99%, were achieved in water at 40 °C. In competition studies, a more hydrophobic substrate (n-Bu acrylate) was preferred over the least hydrophobic substrate (methylacrylate), supportive of a localized hydrophobic microenvironment
Homo-DNA templated chemistry and its application to nucleic acid sensing
作者:Matthias Stoop、Christian J. Leumann
DOI:10.1039/c1cc11469g
日期:——
We have investigated the homo-DNA templated Staudinger reduction of the profluorophore rhodamine azide and have applied this reaction to the detection of natural DNA with a hybrid homo-DNA/DNA molecular beacon. In this system the sensing and the reporting unit are bioorthogonal to each other which facilitates sequence design and increases fidelity.