- Discovery of (3 S,3a R)-2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-3,3a,4,5- tetrahydro-2 H -benzo[ g ]indazole-7-carboxylic acid (PF-3882845), an orally efficacious mineralocorticoid receptor (MR) antagonist for hypertension and nephropathy
-
We have discovered a novel class of nonsteroidal pyrazoline antagonists of the mineralocorticoid receptor (MR) that show excellent potency and selectivity against other nuclear receptors. Early analogues were poorly soluble and had a propensity to inhibit the hERG channel. Remarkably, both of these challenges were overcome by incorporation of a single carboxylate moiety. Structural modification of carboxylate-containing lead R-4g with a wide range of substituents at each position of the pyrazoline ring resulted in R-12o, which shows excellent activity against MR and reasonable pharmacokinetic profile. Introduction of conformational restriction led to a novel series characterized by exquisite potency and favorable steroid receptor selectivity and pharmacokinetic profile. Oral dosing of 3S,3aR-27d (PF-3882845) in the Dahl salt sensitive preclinical model of salt-induced hypertension and nephropathy showed blood pressure attenuation significantly greater than that with eplerenone, reduction in urinary albumin, and renal protection. As a result of these findings, 3S,3aR-27d was advanced to clinical studies.
- Meyers, Marvin J.,Arhancet, Graciela B.,Hockerman, Susan L.,Chen, Xiangyang,Long, Scott A.,Mahoney, Matthew W.,Rico, Joseph R.,Garland, Danny J.,Blinn, James. R.,Collins, Joe T.,Yang, Shengtian,Huang, Horng-Chih,McGee, Kevin F.,Wendling, Jay M.,Dietz, Jessica D.,Payne, Maria A.,Homer, Bruce L.,Heron, Marcia I.,Reitz, David B.,Hu, Xiao
-
experimental part
p. 5979 - 6002
(2010/11/02)
-