[EN] 6-CYCLOALKYL-1, 5-DIHYDRO-PYRAZOLO [3, 4-D] PYRIMIDIN-4-ONE DERIVATIVES AND THEIR USE AS PDE9A INHIBITORS [FR] DÉRIVÉS DE 6-CYCLOALKYL-1,5-DIHYDRO-PYRAZOLO[3,4-D]PYRIMIDIN-4-ONE ET LEURS UTILISATIONS EN TANT QU'INHIBITEURS DE PDE9A
6-Cycloalkyl-pyrazolopyrimidinones for the Treatment of CNS Disorders
申请人:Heine Niklas
公开号:US20120202829A1
公开(公告)日:2012-08-09
The invention relates to novel 6-Cycloalkyl-pyrazolopyrimidinones according to formula (I).
wherein R
1
is a 5 or 6 membered aromatic heteroaryl-group, R
2
is an optional substituent, D is optionally substituted cyclopentyl, cyclohexyl, tetrahydrofuranyl, tetrahydropyranyl or 2-, 3- or 4-pyridyl, m=1 or 2 and n is 0, 1 or 2.
The new compounds are for use as the active entity of medicaments or for the manufacture of medicaments respectively, in particular medicaments for the treatment of conditions concerning deficits in perception, concentration, learning or memory. Such conditions may for example be associated with Alzheimer's disease, schizophrenia and other diseases. The new compounds are also for example for the manufacture of medicaments and/or for use in the treatment of these diseases, in particular for cognitive impairment associated with such disease. The compounds of the invention show PDE9 inhibiting properties.
The present invention is directed to pyrazolopyrimidine compounds which may be useful as therapeutic agents for the treatment of disorders associated with phosphodiesterase 9 (PDE9). The present invention also relates to the use of such compounds for treating cardiovascular and cerebrovascular diseases, such as hypertension, chronic kidney disease and heart failure, and neurological and psychiatric disorders, such as schizophrenia, psychosis or Huntington's disease, and those associated with striatal hypofunction or basal ganglia dysfunction.
STEREOSPECIFIC PHOTODIMERIZATION OF UNSATURATED COMPOUNDS INDUCED BY NICKEL COMPLEXES
作者:Akira Miyashita、Shohgo Ikezu、Hiroyuki Nohira
DOI:10.1246/cl.1985.1235
日期:1985.8.5
(1) or bis(triphenylphosphine)nickelacyclopentane induced stereospecific cyclodimerization of substituted olefins such as acrylonitrile and methylacrylate affording trans-1,2-disubstituted cyclobutanes, while 1,7-octadiene was converted to trans-bicyclo[4.2.0]octane. Ethylene was photochemically dimerized to cyclo- and linear dimers induced by 1.
[EN] 6 - CYCLOBUTYL - 1, 5 - DIHYDRO - PYRAZOLO [3, 4-D] PYRIMIDIN- 4 - ONE DERIVATIVES THEIR USE AS PDE9A INHIBITORS<br/>[FR] DÉRIVÉS DE 6 - CYCLOBUTYL - 1, 5 - DIHYDRO - PYRAZOLO [3, 4-D] PYRIMIDIN- 4 - ONE ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE PDE9A