Novel uridin-2′-yl carbamates: synthesis, incorporation into oligodeoxyribonucleotides, and remarkable fluorescence properties of 2′-pyren-1-ylmethylcarbamateElectronic supplementary information (ESI) available: Additional experimental data for compounds 3, 5 and 6. See http://www.rsc.org/suppdata/p1/b1/b111434b/
申请人:Technische Universität Carolo-Wilhelmina zu
Braunschweig
公开号:EP1972338A1
公开(公告)日:2008-09-24
The present invention relates to the use of molecules having a spacer unit, linker and recognition unit(s) for the treatment and prevention of various diseases, disorders and conditions. In particular, the present invention provides compounds useful in preventing or treating infectious diseases and diseases, disorders or conditions related thereto. Further, the present invention relates to methods for preventing or treating diseases, disorders or conditions involving recognition and binding of carbohydrate structures.
Rhodamine Based Fluorescent Chemosensors for Hg<sup>2+</sup>and its Biological Application
作者:Ji-Young Choi、Wan-Tae Kim、Ju-Young Yoon
DOI:10.5012/bkcs.2012.33.7.2359
日期:2012.7.20
Two new chemosensors, rhodamine 6G derivative bearing hydroxyethyl group (1) and rhodamine base derivative bearing 15-crown-5 group (2) were synthesized and their sensing behaviors toward various metal ions were investigated by UV/Vis and fluorescence spectroscopies. Addition of $Hg^2+}$ ion to a $CH_3CN$ solution of 1 and 2 gave visual color changes as well as fluorescent OFF-ON observations. Selectivity and sensitivity of 1 towards $Hg^2+}$ are excellent enough to detect micromolar level of $Hg^2+}$ ion, even in equeous media and biological sample (HeLa cell).
Tetrakis(trimethylsilyl) Ethenylidene-1,1-bisphosphonate: A Mild and Convenient Michael Acceptor for the Synthesis of 2-Aminoethylidene-1,1-bisphosphonic Acids and Their Potassium Salts
A straightforward synthesis of highly functionalized 2-aminoethylidene-1,1-bisphosphonic acids via the Michael addition of amines to easily available tetrakis(trimethylsilyl) ethenylidene-1,1-bisphosphonate, H2C=C[P(O)(OTMS)2]2, has been described. The potassium salts of the title compounds were also easily achieved in high yield by reacting the Michael adducts with potassium fluoride.
Structure‐Driven Selection of Adaptive Transmembrane Na
<sup>+</sup>
Carriers or K
<sup>+</sup>
Channels
作者:Yu‐Hao Li、Shaoping Zheng、Yves‐Marie Legrand、Arnaud Gilles、Arie Van der Lee、Mihail Barboiu
DOI:10.1002/anie.201802570
日期:2018.8.13
alkyl‐ureido‐benzo‐15‐crown‐5‐ethers are selective ionophores for K+ cations, which are preferred to Na+ cations. The transport mechanism is determined by the optimal coordination rather than classical dimensional compatibility between the crownether hole and the cation diameter. Herein, we demonstrate that systematic changes of the structure lead to unexpected modifications in the cation‐transport activity and
Effect of Competing Alkali Metal Cations on Neutral Host's Anion Binding Ability
作者:Rameshwer Shukla、Toshiyuki Kida、Bradley D. Smith
DOI:10.1021/ol0063104
日期:2000.10.1
Anion binding by neutral hosts in organic solvents can be inhibited by the presence of alkalimetalcations. The binding inhibition is due to salt ion-pairing which increases in the order Cs(+) < K(+) < Na(+). The binding inhibition can be reversed by using heteroditopic hosts that simultaneously bind both the metalcation and the anion. The largest cation-induced enhancements are observed with the