Novel cage-typecyclophanes, which are constructed with two rigid macrocyclic skeletons, tetraaza[3.3.3.3]paracyclophanes, and four bridging segments composed of β-l-aspartyl-l-aspartyl residues and β-d-aspartyl residues individually, were prepared. Chiral host-guest interactions between the hosts and a hydrophobic guest, pamoic acid, were examined by circular dichroism spectroscopy in aqueous media
Novel macrotetracyclic cyclophanes, which are constructed with four cyclophane units having eight dipeptide moieties, have been prepared and characterized by various spectroscopic methods. The guest-binding behavior of the host toward water-soluble porphyrines was examined by electronic spectroscopy.