Bis(alkylguanidinium) receptors for phosphodiesters: Effect of counterions, solvent mixtures, and cavity flexibility on complexation

Article abstract of DOI:10.1021/ja00075a021

Four bis(guanidinium) receptors have been synthesized in which the guanidinium groups are spatially preorganized by an octahydroacridine (meso-3 and d,l-3) or hexahydrodicyclopenta[b,e]pyridine (meso-4 and d,l-4) spacer to complement a phosphodiester. The