title: Synthesis and crystal structure of 1,4,10,13-tetraoxa-7,16-diazoniumcyclo-octadecane bis(4-chloro-2-methyl-phenoxyacetate).
abstract: The title compound was prepared by the reaction of 1,4,10,13-tetraoxa-7,16-diazacyclo-octadecane with 4-chloro-2-methyl-phenoxyacetic acid in a ratio of 1:2. The structure has been proved by the data of elemental analysis, IR spectroscopy, NMR (1H, 13C) technique and by X-ray diffraction analysis. Intermolecular hydrogen bonds between the azonium protons and oxygen atoms of the carboxylate groups were found. Immunoactive properties of the title compound have been screened. The compound has the ability to suppress spontaneous and Con A-stimulated cell proliferation in vitro and therefore can be considered as immunodepressant.
authors.affiliation: University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Str, 24-25, D-14476 Potsdam, Germany. us@chem.uni-potsdam.de.
authors.forename: Sergey N
authors.initials: SN
authors.lastname: Adamovich
authors.forename: Anna N
authors.initials: AN
authors.lastname: Mirskova
authors.forename: Rudolf G
authors.initials: RG
authors.lastname: Mirskov
authors.forename: Uwe
authors.initials: U
authors.lastname: Schilde