Rotaxanes Capable of Recognising Chloride in Aqueous Media
作者:Laura M. Hancock、Lydia C. Gilday、Sílvia Carvalho、Paulo J. Costa、Vítor Félix、Christopher J. Serpell、Nathan L. Kilah、Paul D. Beer
DOI:10.1002/chem.201002076
日期:2010.11.22
attachment of electron‐withdrawing substituents and by increasing its positive charge. A dicationic rotaxane selectively binds chloride in 35 % water, wherein no evidence of oxoanion binding is observed. NMR spectroscopy, X‐ray structural analysis and computational molecular dynamics simulations are used to account for rotaxaneformation yields, anion binding strengths and selectivity trends.
开发了一种新型的通用氯阴离子模板合成途径,用于制备一系列八个新的[2]轮烷主体分子,包括第一个磺酰胺互锁系统。1个1 H NMR光谱滴定研究表明轮烷具有选择性识别竞争性水性溶剂介质中氯离子的能力。互锁主体的卤化物结合亲和力可以通过吸电子取代基的附着以及其正电荷的增加而进一步提高和调节。专用轮烷在35%的水中选择性地结合氯离子,其中没有观察到氧代阴离子结合的迹象。核磁共振波谱,X射线结构分析和分子动力学计算模拟可用来解释轮烷的生成量,阴离子结合强度和选择性趋势。
Leukotriene receptor antagonists. 2. The [[(tetrazol-5-ylaryl)oxy]methyl]acetophenone derivatives
作者:Robert D. Dillard、F. Patrick Carr、Doris McCullough、Klaus D. Haisch、Lynn E. Rinkema、Jerome H. Fleisch
DOI:10.1021/jm00388a028
日期:1987.5
was connected to the second benzene ring in the para position with a chemical bond (67), methylene (68), or ethylene (71). For retention of high antagonist activity, the acetophenone should be substituted in the 2-position by a hydroxyl group and the tetrazole ring should have an acidic hydrogen atom. 1-[2-Hydroxy-3-propyl-4-[[4-(1H-tetrazol-5-ylmethy) phenoxy]methyl]phenyl]ethanone (68, LY1632443) has
合成了一系列[[((四唑-5-基芳基)氧基]甲基]苯乙酮,并作为白三烯D4诱导的豚鼠回肠收缩的拮抗剂进行了评估。在苯乙酮的3-位上用乙基(66),丙基(68),丁基(83)和异丁基(84)取代,得到的-log IC 50值分别为7.9、8.0、7.8和7.7。当四唑-5-基通过化学键(67),亚甲基(68)或乙烯(71)与对位的第二个苯环连接时,会得到同样有效的化合物。为了保持高拮抗剂活性,苯乙酮应在2位上被羟基取代,四唑环应具有酸性氢原子。1- [2-羟基-3-丙基-4-[[4-(1H-四唑-5-基甲基)苯氧基]甲基]苯基]乙酮(68,
2-Ethoxyethyl 2-(4-hydroxyphenoxy)-propanoate
申请人:The Dow Chemical Company
公开号:US04511731A1
公开(公告)日:1985-04-16
Preparation of monoethers of dihydroxybenzenes from an isopropenylphenol and an alkylating agent and thereafter oxidizing in the presence of an acid catalyst.
从异丙基酚和烷基化剂制备二羟基苯单醚,然后在酸催化剂的存在下进行氧化。
Anion induced and inhibited circumrotation of a [2]catenane
作者:Ka-Yuen Ng、Vitor Felix、Sérgio M. Santos、Nicholas H. Rees、Paul D. Beer
DOI:10.1039/b719304a
日期:——
The first example of a catenane capable of performing circumrotation via an anion switching methodology is described; of particular interest is a conformational locking mechanism which results from chloride coordination in the catenane binding cavity.
A Photoswitchable Macrocycle Controls Anion‐Templated Pseudorotaxane Formation and Axle Relocalization
作者:Jorn de Jong、Maxime A. Siegler、Sander J. Wezenberg
DOI:10.1002/anie.202316628
日期:2024.1.22
Anion-templated pseudorotaxane formation is effectively controlled by macrocycles that expand and contract in response to a light stimulus. Upon light-induced threading and dethreading, the axle component can dynamically relocate between the macrocycle and a secondary isophthalamide host. This work is a stepping stone towards signal processing in multicomponent supramolecular systems.