- COMPOUNDS, COMPOSITIONS, AND METHODS OF USE
-
Described herein are compounds that act as CYP46A1 inhibitors, compositions comprising these compounds, and methods of their use into treating neurodegenerative diseases and the like, or a pharmaceutically active salt thereof. The present invention relates to compounds represented by the formula wherein each symbol is as defined in the specification, or a pharmaceutically active salt thereof.
- -
-
Paragraph 0475-0476
(2020/12/11)
-
- Discovery of a selective allosteric M1 receptor modulator with suitable development properties based on a quinolizidinone carboxylic acid scaffold
-
One approach to ameliorate the cognitive decline in Alzheimer's disease (AD) has been to restore neuronal signaling from the basal forebrain cholinergic system via the activation of the M1 muscarinic receptor. A number of nonselective M1 muscarinic agonists have previously shown positive effects on cognitive behaviors in AD patients, but were limited due to cholinergic adverse events thought to be mediated by the activation of the M2 to M5 subtypes. One strategy to confer selectivity for M1 is the identification of positive allosteric modulators, which would target an allosteric site on the M1 receptor rather than the highly conserved orthosteric acetylcholine binding site. Quinoline carboxylic acids have been previously identified as highly selective M1 positive allosteric modulators with good pharmacokinetic and in vivo properties. Herein is described the optimization of a novel quinolizidinone carboxylic acid scaffold with 4-cyanopiperidines being a key discovery in terms of enhanced activity. In particular, modulator 4i gave high plasma free fractions, enhanced central nervous system (CNS) exposure, was efficacious in a rodent in vivo model of cognition, and afforded good physicochemical properties suitable for further preclinical evaluation.
- Kuduk, Scott D.,Chang, Ronald K.,Di Marco, Christina N.,Pitts, Daniel R.,Greshock, Thomas J.,Ma, Lei,Wittmann, Marion,Seager, Matthew A.,Koeplinger, Kenneth A.,Thompson, Charles D.,Hartman, George D.,Bilodeau, Mark T.,Ray, William J.
-
p. 4773 - 4780
(2011/09/20)
-