Novel dendritic macromolecules consisting of uracil units
(LnU-OBn) with the numbers of the nucleobase layers (n)
of 2–4 were synthesized; L3U-OBn and L4U-OBn both formed 1∶1
complexes with La3+, where the L4U-OBn–La3+
complex, in particular, was highly robust towards methanolysis.