NMR study of supramolecular inclusion complexes of 7-[2-(morpholin-4-yl)ethyl]-3-(2-ethoxyethyl)-3,7-diazabicyclo[3.3.1]nonane with cyclodextrins

Structures of 7-[2-(morpholin-4-yl)ethyl]-3-(2-ethoxyethyl)-3,7-diazabicyclo[3.3.1]nonane and its inclusion complexes with α-, β-, and γ-cyclodextrins have been studied by 1H, 13C, COSY, and HMQC NMR spectroscopy. The complexes are formed via entering of one morpholine fragment of the substrate into the inner sphere of a receptor molecule.