9-oxa-6,12-dithia-1,3,5(2,6)-tripyridina-cyclododecaphane-2,4-dione

6,9,12,15-tetraoxa-1,3,5(2,6)-tripyridina-cyclopentadecaphane-2,4-dione

6,9,12-trioxa-2(2,2)-[1,3]dioxolana-1,3,5(2,6)-tripyridina-cyclododecaphan-4-one

6-[2-(6-{2-[6-(2-chloro-ethoxy)-pyridin-2-yl]-[1,3]dioxolan-2-yl}-pyridin-2-yl)-[1,3]dioxolan-2-yl]-1H-pyridin-2-one