1,2,3,4-Tetrahydro-2,4-pyrimidinedione (uracil) is a valuable nucleus
for the construction of potent antagonists of the AT(1) angiotensin II
receptor. Various synthetic routes were applied in order to introduce
a wide range of different groups at the N-3-nitrogen and to obtain co
ndensed uracil derivatives as well. 121 with a N,N-dimethylacetamide r
esidue at N-3 was the most potent compound with an IC50 of 0.65 nM.