Discovery of the Oxadiazine FRM-024: A Potent CNS-Penetrant Gamma Secretase Modulator.

ID: ALA4837257

Journal: J Med Chem

Title: Discovery of the Oxadiazine FRM-024: A Potent CNS-Penetrant Gamma Secretase Modulator.

Authors: Bursavich MG, Harrison BA, Acharya R, Costa DE, Freeman EA, Hrdlicka LA, Jin H, Kapadnis S, Moffit JS, Murphy D, Nolan SJ, Patzke H, Tang C, Van Voorhies HE, Wen M, Koenig G, Blain JF, Burnett DA.

Abstract: The recent approval of aducanumab for Alzheimer's disease has heightened the interest in therapies targeting the amyloid hypothesis. Our research has focused on identification of novel compounds to improve amyloid processing by modulating gamma secretase activity, thereby addressing a significant biological deficit known to plague the familial form of the disease. Herein, we describe the design, synthesis, and optimization of new gamma secretase modulators (GSMs) based on previously reported oxadiazine 1. Potency improvements with a focus on predicted and measured properties afforded high-quality compounds further differentiated via robust Aβ₄₂ reductions in both rodents and nonhuman primates. Extensive preclinical profiling, efficacy studies, and safety studies resulted in the nomination of FRM-024, (+)-cis-5-(4-chlorophenyl)-6-cyclopropyl-3-(6-methoxy-5-(4-methyl-1H-imidazole-1-yl)pyridin-2-yl)-5,6-dihydro-4H-1,2,4-oxadiazine, as a GSM preclinical candidate for familial Alzheimer's disease.

CiteXplore: 34550687

DOI: 10.1021/acs.jmedchem.1c00904

Patent ID: ┄