Transmembrane H<sup>+</sup>/Cl<sup>−</sup> cotransport activity of bis(amido)imidazole receptors
作者:Sopan Valiba Shinde、Pinaki Talukdar
DOI:10.1039/c9ob00554d
日期:——
and protonated form of receptors assessed by 1H-NMR titration experiments confirmed better chloride binding by the protonated form of a receptor compared to its neutral form. The transport experiments across unimolecular vesicles (by HPTS and lucigenin assays) confirmed the H+/Cl− symport process under the applied pH gradient conditions. The transporter also allows anion antiport as evident from the studies
Molecular Scaffold for the Construction of Three-Armed and Cage-Like Receptors
作者:Gebhard Haberhauer、Thomas Oeser、Frank Rominger
DOI:10.1002/chem.200500224
日期:2005.11.4
synthesis of the C3-symmetric molecularscaffold 2. The latter can easily be converted by a single step into either the three-armedreceptors 11-16 or the cage-likereceptor 17. X-ray structures were obtained for 2, 11, and 16, which are discussed in regard to their aptitude as receptor platforms. The interaction of the three-armedreceptors 12-16 and the cage-likereceptor 17 with phloroglucinol was
A C3-symmetric molecular scaffold for the construction of large receptors
作者:Gebhard Haberhauer、Thomas Oeser、Frank Rominger
DOI:10.1039/b406335j
日期:——
A novel C3-symmetric scaffold has been efficiently synthesized exhibiting the property that variable receptor arms can be easily attached by simple alkylation reactions; the utility of the scaffold as a skeleton for large receptors has been examined with a corresponding tris(bipyridyl) derivative toward phloroglucinol.
By starting from chiral N‐aryl imidazole amino acids C3‐symmetric platforms that have bromine atoms in ortho, meta and para position relative to the imidazole unit were synthesized. The molecular structures of these N‐aryl imidazole platforms were studied by NMR spectroscopy, X‐ray crystallography, and quantum chemical calculations.