The Fight against the Influenza A Virus H1N1: Synthesis, Molecular Modeling, and Biological Evaluation of Benzofurazan Derivatives as Viral RNA Polymerase Inhibitors
The influenzaRNApolymerase complex, which consists of the three subunits PA, PB1, and PB2, is a promising target for the development of new antiviral drugs. A large library of benzofurazan compounds was synthesized and assayed againstinfluenzavirus A/WSN/33 (H1N1). Most of the new derivatives were found to act by inhibiting the viralRNApolymerase complex through disruption of the complex formed
Alkyne Ligation Handles: Propargylation of Hydroxyl, Sulfhydryl, Amino, and Carboxyl Groups via the Nicholas Reaction
作者:Sarah M. Wells、John C. Widen、Daniel A. Harki、Kay M. Brummond
DOI:10.1021/acs.orglett.6b02088
日期:2016.9.16
The Nicholas reaction has been applied to the installation of alkyne ligation handles. Acid-promoted propargylation of hydroxyl, sulfhydryl, amino, and carboxyl groups using dicobalt hexacarbonyl-stabilized propargylium ions is reported. This method is useful for introduction of propargyl groups into base-sensitive molecules, thereby expanding the toolbox of methods for the incorporation of alkynes
Synthesis of crosslinking amino acids by click chemistry
作者:Chun Li、Jie Tang、Juan Xie
DOI:10.1016/j.tet.2009.07.054
日期:2009.9
Crosslinking amino acids are naturally existing protein crosslinkers. Herein, we described the synthesis of several novel bis-amino acids constituted of serine, alanine, lysine, and tyrosine with clickchemistry. The Huisgen 1,3-dipolar cycloadditions between azido- and alkyne-functionalized amino acids can be easily realized in the presence of catalytic amount of CuSO4 and Na ascorbate. In addition
Arresting cancer: The well‐known tubulin‐binding agent colchicine was diversified through a click conjugation approach. The key azide, readily prepared from desacetylcolchicine by diazo transfer, was efficiently converted to various triazoles. Biological evaluation of these triazoles revealed their potential as antitumor agents for further development.
Protein modification via alkyne hydrosilylation using a substoichiometric amount of ruthenium(<scp>ii</scp>) catalyst
作者:Terence T.-L. Kwan、Omar Boutureira、Elizabeth C. Frye、Stephen J. Walsh、Moni K. Gupta、Stephen Wallace、Yuteng Wu、Fengzhi Zhang、Hannah F. Sore、Warren R. J. D. Galloway、Jason W. Chin、Martin Welch、Gonçalo J. L. Bernardes、David R. Spring
DOI:10.1039/c6sc05313k
日期:——
The development of site-specific modification of alkyne-functionalized proteins using dimethylarylsilanes and substoichiometric or low-loading of Ru(ii) catalysts is reported. Furthermore, the resultant gem-vinylsilane can undergo further targeted chemical modifications, highlighting its potential for single-site, dual-modification applications.