Dt. Hill et al., D-N-[(1-BENZYL-1H-IMIDAZOL-5-YL)-ALKYL] AND L-N-[(1-BENZYL-1H-IMIDAZOL-5-YL)-ALKYL] ACIDS AS ANGIOTENSIN-II AT-1 ANTAGONISTS, Bioorganic & medicinal chemistry letters, 5(1), 1995, pp. 19-24
A series of D and L-N-[(1-benzyl-1H-imidazol-5-yl)-alkyl] - aromatic a
mino acids (2 to 9) and several achiral analogs (1,10,11) were found t
o be potent AII antagonists (nM range). Among chiral pairs the D isome
r had the highest affinity for the binding site. A D-phenylalanine ana
log, 3, was the most potent (IC50 3.8 nM) and had activity in vivo sim
ilar to SK&F 108566 when given i.v. but was only marginally active whe
n given i.d.