The present invention provides imidazotriazinone compounds which are inhibitors of phosphodiesterase 9. The present invention further provides processes, pharmaceutical compositions, pharmaceutical preparations and pharmaceutical use of the compounds in the treatment of PDE9 associated diseases or disorders in mammals, including CNS or neurodegeneration disorder.
Design and Discovery of 6-[(3<i>S</i>,4<i>S</i>)-4-Methyl-1-(pyrimidin-2-ylmethyl)pyrrolidin-3-yl]-1-(tetrahydro-2<i>H</i>-pyran-4-yl)-1,5-dihydro-4<i>H</i>-pyrazolo[3,4-<i>d</i>]pyrimidin-4-one (PF-04447943), a Selective Brain Penetrant PDE9A Inhibitor for the Treatment of Cognitive Disorders
作者:Patrick R. Verhoest、Kari R. Fonseca、Xinjun Hou、Caroline Proulx-LaFrance、Michael Corman、Christopher J. Helal、Michelle M. Claffey、Jamison B. Tuttle、Karen J. Coffman、Shenpinq Liu、Frederick Nelson、Robin J. Kleiman、Frank S. Menniti、Christopher J. Schmidt、Michelle Vanase-Frawley、Spiros Liras
DOI:10.1021/jm3007799
日期:2012.11.8
hyl)pyrrolidin-3-yl]-1-(tetrahydro-2H-pyran-4-yl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one (PF-04447943) is a novel PDE9A inhibitoridentified using parallel synthetic chemistry and structure-based drug design (SBDD) and has advanced into clinical trials. Selectivity for PDE9A over other PDE family members was achieved by targeting key residue differences between the PDE9A and PDE1C catalytic
The invention provides PDE9-inhibiting compounds of Formula (I),
and pharmaceutically acceptable salts thereof, wherein R, R
1
, R
2
and R
3
are as defined herein. Pharmaceutical compositions containing the compounds of Formula I, and uses thereof in treating neurodegenerative and cognitive disorders, such as Alzheimer's disease and schizophrenia, are also provided.
The present invention is directed to certain 2-(alkyl)-3-[2-(5-fluoro-4-pyrimidinyl)hydrazino]-3-oxopropyl}hydroxyformamide derivatives, compositions containing them, the use of such compounds in the inhibition of bacterial peptide deformylase (PDF) activity, and in the treatment of bacterial infections. Specifically, the invention is directed to compounds of formula (I):
wherein R1, R2 and R3 are defined herein and to pharmaceutically acceptable salts thereof. The compounds of this invention are bacterial peptide deformylase inhibitors and can be useful in the treatment of bacterial infections.
The invention provides PDE9-inhibiting compounds of Formula (I),
and pharmaceutically acceptable salts thereof, wherein R, R1, R2 and R3 are as defined herein. Pharmaceutical compositions containing the compounds of Formula I, and uses thereof in treating neurodegenerative and cognitive disorders, such as Alzheimer's disease and schizophrenia, are also provided.