The discovery, synthesis and structure-activity relationships of a ser
ies of novel ,4-diaryl-2-oxo-1,2-dihydro-quinoline-3-carboxylic acids
as non-selective endothelin ETA/ETB receptor antagonists are described
. The most potent inhibitor 3m displayed an IC50 of 260 nM and 200 nM
for ETA and ETB receptors,respectively. (C) 1997 Elsevier Science Ltd.