Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Hydrogen-bonding interactions of steroid-based cyclic and acyclic receptors containing 2,6-bis(acylamino)pyridine with uracil derivatives were studied in CDCl 3 . Acyclic receptors show better binding behaviour as compared to cholaphanes with uracil derivatives.