Assembly of ion channel mimics from a modular construction set
作者:Thomas M. Fyles、Tony D. James、Allana Pryhitka、Mohammad Zojaji
DOI:10.1021/jo00078a026
日期:1993.12
Ion channel mimics were assembled from a modular construction set consisting of core units, derived from polycarboxylate 18-crown-6 ethers, wall units, derived from macrocyclic tetraesters, and polar head groups which provide overall amphiphilic character. The preparation of symmetrical and side-discriminated macrocyclic tetraesters from diols and maleic anhydride gave the required macrocycles in low yields by acid-catalyzed esterification, or by carboxylate alkylation. Addition of 1 equiv of 3-mercaptopropanol to the macrocyclic dienes gave the wall unit precursor. Coupling of the walls to the crown ether via esters was achieved by carboxylate alkylation. The syntheses were completed by Michael addition of head group thiolates. Twenty-one candidate ion channels of molecular weight 1600-4800 g/mol were prepared and characterized.
Fuhrhop, Juergen-Hinrich; Ellermann, Karin; David, Hans Herrmann, Angewandte Chemie, 1982, vol. 94, # 6, p. 444 - 445
作者:Fuhrhop, Juergen-Hinrich、Ellermann, Karin、David, Hans Herrmann、Mathieu, Joachim
DOI:——
日期:——
Bolaamphiphiles and monolayer lipid membranes made from 1,6,19,24-tetraoxa-3,21-cyclohexatriacontadiene-2,5,20,23-tetrone
extremely thin (hydrophobic part ~20 A) monolayer lipid membrane (MLMs) vesicles, which have been characterized by electron microscopy. Vesicle MLMs produce well-resolved 1H NMR spectra at room temperature, indicating fluidity. Such thin vesiclemembranes can be effectively perforated with monensin pyromellitate to give water channels. They can be made unsymmetric; they resist fusion. The ester linkages