Water-Soluble Cavitands: Synthesis of Methylene-Bridged Resorcin[4]arenes Containing Hydroxyls and Phosphates at Their Feet and Bromomethyls and Thiomethyls at Their Rims
作者:Adam R. Mezo、John C. Sherman
DOI:10.1021/jo980305k
日期:1998.10.1
The synthesis of rim-functionalized methylene-bridged resorcin[4]arenes ("cavitands") containing hydrophilic propanol or water-solublilizing propylphosphate feet is described. The cavitands possess the synthetically useful benzylthiol (cavitands 6 and 16) or benzylbromide (cavitands 9 and 11) functionalities at their rims, which are suitable for further derivatization near the hydrophobic cavity of
Synthesis of Water-Soluble Highly Charged and Methylene-Bridged Resorcin[4]arenes
作者:Stefan Bossmann、Xiaoxuan Leaym、Stefan Kraft
DOI:10.1055/s-2008-1032192
日期:2008.3
Methylene-bridged resorcin[4]arenes featuring electrochemically active and hydrophilic viologen units, chemically attached to their ‘rim’ regions, and a variety of pendent groups (‘feet’) have been synthesized. These compounds were designed to act as electrochemically active cavitands and especially as guests in mycobacterial channel proteins (channel blockers).
Four new cavitand ligands, modified at the lower rim with cyano and pyridyl functional groups, have been synthesized and their coordinative behaviour toward transition metal ions has been explored. The outcome of the self-assembly of these compounds in the presence of different metal precursors is biased toward the formation of intramolecular complexes, independent of the coordination geometry imposed by the metal centre. Dimeric species have been obtained by decreasing the number of ligands at the lower rim from four to two and by using a metal precursor capable of exchanging four ligands simultaneously.