Discovery of A-971432, An Orally Bioavailable Selective Sphingosine-1-Phosphate Receptor 5 (S1P5) Agonist for the Potential Treatment of Neurodegenerative Disorders
摘要:
S1P(5) is one of S receptors for sphingosine-1-phosphate and is highly expressed on endothelial cells within the blood brain barrier, where it maintains barrier integrity in in vitro models (j Neuroinflamm. 2012, 9, 133). Little more is known about the effects of S1P(5) modulation due to the absence of tool molecules with suitable selectivity and drug-like properties. We recently reported that molecule A-971432 (Harris et al., 2010) (29 in this paper) is highly efficacious in reversing lipid accumulation and age-related cognitive decline in rats (Van der Kam, et al., AAIC 2014). Herein we describe the development of a series of selective S1P(5) agonists that led to the identification of compound 29, which is highly selective for S1P(5) and has excellent plasma and CNS exposure after oral dosing in preclinical species. To further support its suitability for in vivo studies of S1P(5) biology, we extensively characterized 29, including confirmation of its selectivity in pharmacodynamic assays of S1P(1). and S1P(3) function in rats. In addition, we found that 29 improves blood brain barrier integrity in an in vitro model and reverses age-related cognitive decline in mice. These results suggest that S1P(5) agonism is an innovative approach with potential benefit in neurodegenerative disorders involving lipid imbalance and/or compromised blood brain barrier such as Alzheimer's disease or multiple sclerosis.
[EN] AGONISTS AND ANTAGONISTS OF THE S1P5 RECEPTOR, AND METHODS OF USES THEREOF<br/>[FR] AGONISTES ET ANTAGONISTES DU RÉCEPTEUR S1P5, ET LEURS PROCÉDÉS D'UTILISATION
申请人:ABBOTT LAB
公开号:WO2010093704A1
公开(公告)日:2010-08-19
Disclosed are compounds that are agonists or antagonists of the S1P5 receptor, compositions comprising said compounds, and methods of using said compounds and compositions. In certain embodiments, said compounds are 1-benzylazetidine-3-carboxylic acid derivatives. In certain embodiments, said methods relate to the treatment of neuropatic pain and/or a neurodegenerative disorder. In certain embodiments, said compounds may be used in combination with a second therapeutic agent.
Heck Reactions of α- or β-Substituted Enol Ethers with Aryl Bromides Catalysed by a Tetraphosphane/Palladium Complex – Direct Access to Acetophenone or 1-Arylpropanone Derivatives
α-arylation of these enol ethers was observed in all cases, but mixtures of (Z) and (E) isomers were generally obtained, which in many cases yielded a single ketone product after acid treatment. The stereoselectivity of this reaction depends on steric and electronic factors, and better stereoselectivities in favour of (Z) isomers were observed with electron-rich or sterically congested aryl bromides
Agonists and Antagonists of the S1P5 Receptor, and Methods of Use Thereof
申请人:Harris Christopher M.
公开号:US20100216762A1
公开(公告)日:2010-08-26
Disclosed are compounds that are agonists or antagonists of the S1P
5
receptor, compositions comprising said compounds, and methods of using said compounds and compositions. In certain embodiments, said compounds are 1-benzylazetidine-3-carboxylic acid derivatives. In certain embodiments, said methods relate to the treatment of neuropatic pain and/or a neurodegenerative disorder. In certain embodiments, said compounds may be used in combination with a second therapeutic agent.