Azide–alkyne cycloaddition for universal post-synthetic modifications of nucleic acids and effective synthesis of bioactive nucleic acid conjugates
作者:Yu-Chih Su、Yu-Lun Lo、Chi-Ching Hwang、Li-Fang Wang、Min Hui Wu、Eng-Chi Wang、Yun-Ming Wang、Tzu-Pin Wang
DOI:10.1039/c4ob01132e
日期:——
modifications of nucleicacids are essential to studies of these molecules for science and applications. Here we report a facile universal approach by harnessing versatile phosphoramidation reactions to regioselectively incorporate alkynyl/azido groups into post-synthetic nucleicacids primed with phosphate at the 5′ termini. With and without the presence of copper, the modified nucleicacids were subjected
[EN] GLUCOSE-RESPONSIVE INSULIN CONJUGATES<br/>[FR] CONJUGUÉS D'INSULINE SENSIBLES AU GLUCOSE
申请人:MERCK SHARP & DOHME
公开号:WO2021021535A1
公开(公告)日:2021-02-04
Glucose-responsive insulin conjugates that contain one or more trisaccharides are provided. Such insulin conjugates may display a pharmacokinetic (PK) and/or pharmacodynamic (PD) profile that is responsive to the systemic concentrations of a saccharide such as glucose or alpha-methylmannose, even when administered to a subject in need thereof in the absence of an exogenous multivalent saccharide-binding molecule.
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
this context, the synthesis of readily functionalizable phosphonium-tagged coumarin derivatives enabling a dual mass-tag and fluorescencelabelling of analytes or (bio)molecules of interest through a single-step protocol, is reported. The utility of these coumarins is illustrated through the preparation of fluorogenic substrates that facilitated identification of the peptide fragment released by specific