Novel adamantane-bearing anilines and properties of their supramolecular complexes with β-cyclodextrin
作者:Robert Vícha、Michal Rouchal、Zuzana Kozubková、Ivo Kuřitka、Radek Marek、Petra Branná、Richard Čmelík
DOI:10.1080/10610278.2011.593628
日期:2011.10.1
Several novel anilines bearing 1-adamantyl substituents that are useful for drug modification were synthesised from the corresponding 1-adamantyl (nitrophenyl) ketones. The host-guest systems of these prepared ligands with beta-cyclodextrin (beta-CD) were studied using electrospray ionisation mass spectrometry, NMR spectroscopy, titration calorimetry and semi-empirical calculations. The complexes with 1: 1 stoichiometry were found to predominantly exist as pseudorotaxane-like threaded structures with the adamantane cage sitting deep in the cavity of beta-CD close to the wider rim. Such geometry was observed for all examined amines and is independent of their structure and/or presence of protic substituents.