A. Marsh et al., SELF-COMPLEMENTARY HYDROGEN-BONDING HETEROCYCLES DESIGNED FOR THE ENFORCED SELF-ASSEMBLY INTO SUPRAMOLECULAR MACROCYCLES, Chemical communications, (13), 1996, pp. 1527-1528
A series of 2-oxopyrimido[4,5-d]pyrimidin-5(6H)-ones are synthesised t
hat contain a hydrogen bond code that mediates their self-organisation
into a hexameric supramolecular macrocyclic structure.