The microwave synthesis of twenty quaternary ammonium salts is described. The syntheses feature comparable yields to conventional synthetic methods reported in the current literature with reduced reaction times and the absence of solvent or minimal solvent.
The fluorescent probes based on Tröger'sbase motive with both coumarin and cyanine substitution 11-13 have been synthesized by multi-step synthesis in high overall yields. Intracellular localization of prepared probes have been tested using four different cell lines (HF-P4, BLM, U-2 OS and A-2058). Prepared probes have intensive green and red fluorescence. Co-localization with commercial lysosome
通过多步骤合成以高总产率合成了基于Tröger碱性动机的香豆素和花青酸取代基11-13的荧光探针。已使用四种不同的细胞系(HF-P4,BLM,U-2 OS和A-2058)测试了制备探针的细胞内定位。制备的探针具有强烈的绿色和红色荧光。与商业溶酶体特异性标记LysoTracker Blue DND 22的共定位已被证实,所有制备的荧光探针都以高选择性标记了溶酶体区室,并且探针在低浓度下显示出优异的亮度。
Specific ligands based on Tröger’s base derivatives for the recognition of glycosaminoglycans
作者:Zdeněk Kejík、Tomáš Bříza、Martin Havlík、Bohumil Dolenský、Robert Kaplánek、Jarmila Králová、Ivan Mikula、Pavel Martásek、Vladimír Král
DOI:10.1016/j.dyepig.2016.07.002
日期:2016.11
Symmetric Tröger’sbase derivatives with quinolinium substitution, 7 and 8, were prepared, and their structures were confirmed by 1H and 13C NMR, 2D NMR and NOE NMR techniques and elemental analysis. These compounds were studied as specific ligands for the recognition of glycosaminoglycans (heparin, heparan sulphate, chondroitin sulphate and hyaluronic acid). They exhibited high affinity and selectivity
制备了具有喹啉取代基的对称Tröger碱基衍生物7和8,并通过1 H和13证实了其结构C NMR,2D NMR和NOE NMR技术以及元素分析。研究了这些化合物作为识别糖胺聚糖(肝素,硫酸乙酰肝素,硫酸软骨素和透明质酸)的特异性配体。它们对糖胺聚糖,特别是肝素表现出高亲和力和选择性。条件结合常数,线性范围和检测限通过紫外可见光谱法测定。这些值,特别是在极低的检测限下,表明所制备的配体具有识别和测定糖胺聚糖,特别是肝素的巨大潜力。例如, 在培养基(1 mM NaCl(H)中,7和8的最低可检测肝素浓度为0.1和0.17 ng / mL(R 2 = 0.988和0.9938)2 O:MeOH; 7:3,v / v),pH = 7.34)。
D-π-A'-π-A chromophores with quinoxaline core in the π-electron bridge and charged heterocyclic acceptor moiety: Synthesis, DFT calculations, photophysical and electro-chemical properties
作者:Alexey A. Kalinin、Sirina M. Sharipova、Alina I. Levitskaya、Yulia B. Dudkina、Timur I. Burganov、Olga D. Fominykh、Sergey A. Katsyuba、Yulia H. Budnikova、Marina Yu. Balakina
DOI:10.1016/j.jphotochem.2020.113042
日期:2021.2
Chromophores with charged heterocyclic acceptor moiety in combination with divinylquinoxaline conjugated π-bridge show a significant solvatochromic shift, small energy gap value (determined by various methods), and large values of the first hyperpolarizability estimated by DFT. A quinoxaline-based chromophore with an indolium acceptor exhibits an outstanding solvatochromic shift (0.38 eV), probably