The epidermalgrowthfactorreceptor (EGFR) is involved in the proliferation and differentiation of normal and malignant cells and is a major therapeutic target for a variety of human cancers. The peptide GE11 was reported to bind efficiently to the EGFR. Labeling GE11 with radionuclides may aid in the quantification of EGFR expression in tumors via noninvasive imaging. To this end, a GGGK linker was
Highly active copper-catalysts for azide-alkynecycloaddition
作者:Zsombor Gonda、Zoltán Novák
DOI:10.1039/b920790m
日期:——
Bis-triphenylphosphano complexes of copper(I)-carboxylates serve as efficient catalysts for azide-alkyne cycloaddition. The triazole formation takes place straightforwardly at ambient temperature providing a wide variety of products with good yields in the presence of 0.005–0.05% catalyst.
<i>S</i>-Farnesyl-Thiopropionic Acid Triazoles as Potent Inhibitors of Isoprenylcysteine Carboxyl Methyltransferase
作者:Joel A. Bergman、Kalub Hahne、Jiao Song、Christine A. Hrycyna、Richard A. Gibbs
DOI:10.1021/ml200106d
日期:2012.1.12
We report the design and synthesis of novel FTPA-triazole compounds as potent inhibitors of isoprenylcysteinecarboxylmethyltransferase (Icmt), through a focus on thioether and isoprenoid mimetics. These mimetics were coupled utilizing a copper-assisted cycloaddition to assemble the potential inhibitors. Using the resulting triazole from the coupling as an isoprenyl mimetic resulted in the biphenyl
Schmidt Reaction of ω-Azido Valeryl Chlorides Followed by Intermolecular Trapping of the Rearrangement Ions: Synthesis of Assoanine and Related Pyrrolophenanthridine Alkaloids
作者:Shao-Lei Ding、Yang Ji、Yan Su、Rui Li、Peiming Gu
DOI:10.1021/acs.joc.8b03018
日期:2019.2.15
The Schmidt reaction of ω-azido valeryl chlorides in the presence of an additional nucleophile was explored. The arenes, alcohols, and amines were demonstrated as the intermolecular trapping reagents for isocyanate ion and N-acyliminium ion from the Schmidt rearrangement, affording the corresponding products with moderate to excellent yields. Two 2-oxoindoles from the reaction were successfully converted
Chemical Targeting of Voltage Sensitive Dyes to Specific Cells and Molecules in the Brain
作者:Tomas Fiala、Jihang Wang、Matthew Dunn、Peter Šebej、Se Joon Choi、Ekeoma C. Nwadibia、Eva Fialova、Diana M. Martinez、Claire E. Cheetham、Keri J. Fogle、Michael J. Palladino、Zachary Freyberg、David Sulzer、Dalibor Sames
DOI:10.1021/jacs.0c00861
日期:2020.5.20
dense dopaminergic axons in the mouse striatum and sparse noradrenergic axons in the mouse cortex in acute brain slices. PFQX in conjunction with ligand-directed acyl imidazole chemistry enables covalent labeling of AMPA-type glutamate receptors in the same brain regions. Probe variants bearing either a classical electrochromic ANEP dye or state-of-the-art VoltageFluor-type dye respond to membrane potential