Construction of new [2]pseudorotaxanes by hydrogen bonding assembly of macrocyclic tetrathiolactam with amides and an ester

Thionation of a macrocyclic tetralactam gave a new macrocyclic tetrathiolactam. [2]Pseudorotaxanes constructed from the macrocycle with diamides and a diester as a neutral guest have been prepared by a facile threading process. Molecular structures and hydrogen bonding association properties of the [2]pseudorotaxanes were characterized by X-ray crystallography and 1H NMR spectroscopy.