Bioorthogonal Hydroamination of Push–Pull‐Activated Linear Alkynes
作者:Dahye Kang、Sheldon T. Cheung、Justin Kim
DOI:10.1002/anie.202104863
日期:2021.7.26
adequately protecting it against cellular nucleophiles. This design preserves the low steric profile of an alkyne and pairs it with a comparably unobtrusive hydroxylamine. The kinetics are on par with those of the fastest strain-promoted azide-alkyne cycloaddition reactions, the products regioselectively formed, the components sufficiently stable and easily installed, and the reaction suitable for cellular
N , N之间的生物正交反应描述了-二烷基羟胺和推拉活化卤代炔烃。我们探索了再杂化效应在激活炔烃中的应用,并且我们表明,当竞争的立体电子和感应因子得到适当平衡时,电子效应在未催化的共轭逆 Cope 消除反应中充分激活线性炔烃,同时充分保护其免受细胞亲核试剂的侵害。这种设计保留了炔烃的低空间分布,并将其与相对不显眼的羟胺配对。动力学与最快的应变促进叠氮化物-炔烃环加成反应相当,产物区域选择性形成,组分足够稳定且易于安装,反应适合细胞标记。
Visualizing Compartmentalized Cellular Mg<sup>2+</sup> on Demand with Small-Molecule Fluorescent Sensors
作者:Jessica J. Gruskos、Guangqian Zhang、Daniela Buccella
DOI:10.1021/jacs.6b07927
日期:2016.11.9
processes demands sensors with controllable localization for the measurement of organelle-specific levels of cations with subcellular resolution. We introduce herein a new two-step strategy for in situ anchoring and activation of a fluorescent Mg2+ sensor within an organelle of choice, using a fast fluorogenic reaction between a tetrazine-functionalized pro-sensor, Mag-S-Tz, and a strained bicyclononyne
[EN] AZETIDINE-SUBSTITUTED FLUORESCENT COMPOUNDS<br/>[FR] COMPOSÉS FLUORESCENTS À SUBSTITUTION AZÉTIDINE
申请人:HUGHES HOWARD MED INST
公开号:WO2015153813A1
公开(公告)日:2015-10-08
The presently-disclosed subject matter includes azetidine-substituted fluorescent compounds, where the compounds may be used as probes, dyes, tags, and the like. The presently-disclosed subject matter also includes kits comprising the same as well as methods for using the same to detect a target substance.
作者:Christian Steinebach、Izidor Sosič、Stefanie Lindner、Aleša Bricelj、Franziska Kohl、Yuen Lam Dora Ng、Marius Monschke、Karl G. Wagner、Jan Krönke、Michael Gütschow
DOI:10.1039/c9md00185a
日期:——
A modular chemistry toolbox was developed for cereblon-directed PROTACs.
为 cereblon 定向 PROTACs 开发了一个模块化化学工具箱。
Triarylmethane Fluorophores Resistant to Oxidative Photobluing
作者:Alexey N. Butkevich、Mariano L. Bossi、Gražvydas Lukinavičius、Stefan W. Hell
DOI:10.1021/jacs.8b11036
日期:2019.1.16
Spectral stability of small-molecule fluorescent probes is required for correct interpretation and reproducibility of multicolor fluorescence imaging data, in particular under high (de)excitation light intensities of super-resolutionimaging or in single-molecule applications. We propose a synthetic approach to a series of spectrally stable rhodamine fluorophores based on sequential Ru- and Cu-catalyzed
多色荧光成像数据的正确解释和再现需要小分子荧光探针的光谱稳定性,特别是在超分辨率成像的高(去)激发光强度下或在单分子应用中。我们提出了一种基于连续 Ru 和 Cu 催化转化的一系列光谱稳定罗丹明荧光团的合成方法,使用化学计量分析在其他荧光团的背景下评估它们对光漂白和光转换的稳定性,并证明了荧光团光产物的化学反应性。已经确定了提供抗光转换三芳基甲烷荧光团的取代模式,并证明了非蓝色标记在活细胞 STED 纳米显微镜中的适用性。