4-[5-(5-chloro-1-methyl-1H-imidazol-2-yl)-penta-2,4-diynyl]-morpholine

4-benzoyloxy-2-methyl-1-(5-morpholin-4-yl-penta-1,3-diynyl)-benzene

4-[4-(5-morpholin-4-yl-penta-1,3-diynyl)-phenyl]-morpholine

4,4'-[5,5'-(4-methoxy-m-phenylene)-di-penta-2,4-diynyl]-bis-morpholine

4-{3-[5-(5-morpholin-4-yl-penta-1,3-diynyl)-benzofuran-2-yl]-prop-2-ynyl}-morpholine