Chiral cyclohexanohemicucurbit[n]urils with multiple interaction sites induce chirality on planar zinc porphyrins and bind up to three porphyrin molecules.

A novel macrocycle, decamethylpressocucurbit[5]uril (Me10prCB[5]), was synthesized by acid-catalyzed condensation of propanediurea and paraformaldehyde. This macrocycle binds methane with higher affinity than cucurbit[5]uril and its permethylated derivative.

Synthesis of glycoluril tetramer bearing hydrogen atoms on its convex face and framed by two xylylene units is reported. This tetramer forms dimeric aggregates in the solid state. Host -guest properties of the tetramer with various ammonium and pyridinium guests were determined using 1 H NMR spectroscopy. The results were compared with structurally related host molecules.