准确地定量活细胞线粒体内局部粘度的变化是有意义的,因为粘度会影响线粒体网络的组织和代谢物的扩散。尽管已经报道了许多靶向线粒体的分子探针,但是几乎所有的探针都没有固定在线粒体上。因此,它们可能不适合在电位降低的异常线粒体中进行感测。为了监测所有线粒体的粘度,无论它们的工作状态或健康状况如何,我们都开发了第一个可固定的BODIPY(硼二吡咯烷)转子,称为Vis-A。Vis-A含有一个醛基作为与蛋白质氨基反应的锚点,使其固定在线粒体中。没有这种锚定单元的参考化合物Vis-B也被合成。Vis-A和Vis-B均显示出优异的线粒体靶向性,与市售的线粒体染料(Mito Tracker Deep Red)一样好。但是,当对细胞进行化学处理以降低线粒体电位时,只有Vis-A继续在线粒体中发出强荧光,但Vis-B和Mito Tracker深红色的信号完全消失。该比较证实Vis-A不仅特异性地定位于线粒体中,而
Thiourea dioxide promoted efficient organocatalytic one-pot synthesis of a library of novel heterocyclic compounds
作者:Sanny Verma、Subodh Kumar、Suman L. Jain、Bir Sain
DOI:10.1039/c1ob05818e
日期:——
The utility of thiourea dioxide as an efficient organocatalyst for the library synthesis of novel heterocyclic compoundsvia one-pot multicomponent coupling reactions is disclosed. Thiourea dioxide is an inexpensive and readily accessible catalyst, resulting in better product yields as compared to the corresponding thiourea as catalyst. Thiourea dioxide is found to be insoluble in various organic solvents and therefore at the end of the reaction products can be separated by extraction with diethyl ether and the recovered catalyst can be used several times with consistent catalytic activity.
We have designed and synthesized a family of Ir(III) metal complexes coordinated with two cyclometalated bis-fluorophenylpyridine ligands and an ancillary dipyrromethene which is functionalized with a mesityl group (Ir(dipy)-1), an α-chloroacetyl ester (Ir(dipy)-2) or a chain containing an ammonium cation (Ir(dipy)-3). The Ir(III) complexes feature a high triplet state population enabling red phosphorescence
[EN] LUMINESCENT LANTHANIDE (III) -CHELATED DENDRITIC COMPLEXES HAVING LIGHT-HARVESTING EFFECT AND THEIR SYNTHETIC METHODS<br/>[FR] COMPLEXES DENDRITIQUES CHELATES DE LANTHANIDE III LUMINESCENTS A EFFET COLLECTEUR DE LUMIERE ET PROCEDES SYNTHETIQUES ASSOCIES
申请人:KIM HWAN-KYU
公开号:WO2004092185A1
公开(公告)日:2004-10-28
The present invention relates to new organic luminescent complex compounds containing rare earth metal ions, and methods for preparing the same. The compounds have photophysical properties which are maximized by processes of absorbing and transferring artificial light using the principle of photosynthetic antenna complexes. The compounds have a structure where the rare earth metal ions are efficiently encapsulated with organic ligand derivatives.
[EN] QUINONE-METHIDE PRECURSORS WITH BODIPY CHROMOPHORE, METHOD OF PREPARATION, BIOLOGICAL ACTIVITY AND APPLICATION IN FLUORESCENT LABELLING<br/>[FR] PRÉCURSEURS DE QUINONE-MÉTHIDE PRÉSENTANT UN GROUPE CHROMOPHORE DE TYPE BODIPY, PROCÉDÉ DE PRÉPARATION, ACTIVITÉ BIOLOGIQUE ET APPLICATION EN MARQUAGE FLUORESCENT
申请人:RUDJER BOSKOVIC INST
公开号:WO2017199056A1
公开(公告)日:2017-11-23
The invention relates to BODIPY derivatives of Formula (I) that bear one or more functional groups which in the photochemical reaction upon irradiation with visible light undergo deamination and deliver quinone methides. Furthermore, the invention relates to the antiproliferative activity of BODIPY derivatives and their use for pharmaceutical applications and for fluorescent labeling, particularly for labeling proteins.
Physicochemical and computational insight of <sup>19</sup>F NMR and emission properties of <i>meso</i>-(<i>o</i>-aryl)-BODIPYs
作者:Mónica Farfán-Paredes、Oscar González-Antonio、Diana E. Tahuilan-Anguiano、Jorge Peón、Armando Ariza、Pascal G. Lacroix、Rosa Santillan、Norberto Farfán
DOI:10.1039/d0nj02576c
日期:——
series of electronic and physicochemical parameters were explored to determine their effect on experimental spectroscopic and photophysical data. Through a systematic obtention of a series of meso-(o-aryl)-BODIPYs, 19F NMR spectra were analyzed and their fluorescence quantum yields in several solvents were measured. Experimental values of 19F chemical shift difference ΔδF correlate well with σ-Hammett constants
探索了一系列电子和理化参数,以确定它们对实验光谱和光物理数据的影响。通过系统地获得一系列内消旋-(o-芳基)-BODIPY,分析了19 F NMR光谱,并测量了它们在几种溶剂中的荧光量子产率。的实验值19 ˚F化学位移差Δ δ ˚F与σ-Hammett常数很好地相关,后者表示氟原子上官能团的感应性质。通过对旋转能垒,静电势图,组电负性,电荷分配和硬度/柔软度的计算DFT探索,可以深入了解这些特征如何与测量的特征直接相关。对这些特性的扩展理解提供了设计论据和结构-性质关系,这将以更有利的方式帮助理解合成分子的特性以及与结构相关的未来尝试。