Discovery of pyrazolopyrimidine phosphodiesterase 10A inhibitors for the treatment of schizophrenia
摘要:
Herein, we present the identification of a novel class of pyrazolopyrimidine phosphodiesterase 10A (PDE10A) inhibitors. Beginning with a lead molecule (1) identified through a fragment-based drug discovery (FBDD) effort, lead optimization was enabled by rational design, X-ray crystallography, metabolic and off-target profiling, and fragment scaffold-hopping. We highlight the discovery of PyP-1, a potent, highly selective, and orally bioavailable pyrazolopyrimidine inhibitor of PDE10A. PyP-1 exhibits sub-nanomolar potency (PDE10A K-i = 0.23 nM), excellent pharmacokinetic (PK) and physicochemical properties, and a clean off-target profile. It displays dose-dependent efficacy in numerous pharmacodynamic (PD) assays that measure potential for anti-psychotic activity and cognitive improvement. PyP-1 also has a clean preclinical profile with respect to cataleptic potential in rats, prolactin secretion, and weight gain, common adverse events associated with currently marketed therapeutics. Further, PyP-1 displays in vivo preclinical target engagement as measured by PET enzyme occupancy in concert with [C-11]MK-8193, a novel PDE10A PET tracer. (C) 2015 Elsevier Ltd. All rights reserved.
One-pot approach for the synthesis of trans-cyclopropyl compounds from aldehydes. Application to the synthesis of GPR40 receptor agonists
作者:Michaël Davi、Hélène Lebel
DOI:10.1039/b810708d
日期:——
A novel multicatalytic one-pot process providing trans-cyclopropyl compounds from corresponding aldehydes has been developed and applied to the synthesis of GPR40 small molecule agonists.
A new catalytic method for the denitrogenative transannulation/cyclopropanation of in‐situ‐generated 2‐(diazomethyl)pyridines is described using a cobalt‐catalyzed radical‐activation mechanism. The method takes advantage of the inherent properties of a CoIII‐carbene radical intermediate and is the first report of denitrogenative transannulation/cyclopropanation by a radical‐activation mechanism, which
[EN] PYRIMIDINE PDE10 INHIBITORS<br/>[FR] INHIBITEURS PYRIMIDINES DE PDE10
申请人:MERCK SHARP & DOHME
公开号:WO2013028590A1
公开(公告)日:2013-02-28
The present invention is directed to pyrimidine compounds which are useful as therapeutic agents for the treatment of central nervous system disorders associated with phosphodiesterase 10 (PDE10). The present invention also relates to the use of such compounds for treating neurological and psychiatric disorders, such as schizophrenia, psychosis or Huntington's disease, and those associated with striatal hypofunction or basal ganglia dysfunction.
We have studied the reactions between [1,2,3]Triazolo[1,5-a]pyridines 1a,b,c and electron-deficient ethylenes in different conditions. Compounds 1a and 1b react with ethyl propiolate, and dimethylacetylenedicarboxylate giving a new class of biaryl compounds pyridyl pyrazoles, and with ethyl acrylate giving pyridyl cyclopropanes. Compound 1c did not give any product in the studied conditions. A proposal
我们研究了[1,2,3]三唑并[1,5- a ]吡啶1a,b,c与缺电子的乙烯在不同条件下的反应。化合物1a和1b与丙酸乙酯和乙炔二甲酸二甲酯反应,得到一类新的联芳基化合物吡啶基吡唑,与丙烯酸乙酯反应,得到吡啶基环丙烷。在研究的条件下,化合物1c没有得到任何产物。提出了这些反应的机理的建议,其中三唑并吡啶用作1,3-偶极,产生1,3-偶极环加成。
PYRAZOLOPYRIMIDINE PDE 10 INHIBITORS
申请人:Cox Christopher D.
公开号:US20130137707A1
公开(公告)日:2013-05-30
The present invention is directed to pyrazolopyrimidine compounds which are useful as therapeutic agents for the treatment of central nervous system disorders associated with phosphodiesterase 10 (PDE10). The present invention also relates to the use of such compounds for treating neurological and psychiatric disorders, such as schizophrenia, psychosis or Huntington's disease, and those associated with striatal hypofunction or basal ganglia dysfunction.