Identification, synthesis and SAR of amino substituted pyrido[3,2b]pyrazinones as potent and selective PDE5 inhibitors
摘要:
A new class of potent and selective PDE5 inhibitors is disclosed. Guided by X-ray crystallographic data, optimization of an HTS lead led to the discovery of a series of 2-aryl, (N8)-alkyl substituted-6-aminosubstituted pyrido[3,2b]pyrazinones which show potent inhibition of the PDE5 enzyme. Synthetic details and some structure-activity relationships are also presented. (C) 2009 Elsevier Ltd. All rights reserved.
Dehydrative amination of benzhydrols with electron-withdrawing group-substituted 2-aminopyridines utilizing Au(<scp>iii</scp>)/TPPMS catalyst system in water
using 2-aminopyridines with poor nucleophilic character in water. Various functional groups such as electron-withdrawing nitro, cyano and halogen groups were tolerated well to form the desired N-benzylated 2-aminopyridine compounds. On the basis of mechanistic studies including kinetic profiles, Hammett study and isotope effects, we propose a pathway in which a Lewis acidic gold cation species activates
This invention relates to novel compounds having the structural formula (I) and to their pharmaceutically acceptable salt, compositions and methods of use. These novel compounds provide a treatment or prophylaxis of cognitive impairment, Alzheimer Disease, neurodegeneration and dementia.
[EN] SUBSTITUTED AMINOPYRIDINES AND USES THEREOF<br/>[FR] AMINOPYRIDINES SUBSTITUEES ET UTILISATIONS
申请人:ASTRAZENECA AB
公开号:WO2006065204A1
公开(公告)日:2006-06-22
[EN] This invention relates to novel compounds having the structural formula (I) and to their pharmaceutically acceptable salt, compositions and methods of use. These novel compounds provide a treatment or prophylaxis of cognitive impairment, Alzheimer Disease, neurodegeneration and dementia. [FR] L'invention concerne des composés représentés par la formule générale (I) suivante, un sel pharmaceutiquement acceptable desdits composés, des compostions renfermant ces composés et leurs méthodes d'utilisation. Ces composés peuvent s'utiliser pour le traitement ou la prévention de déficiences cognitives, de la maladie d'Alzheimer, de la neurodégénérescence et de la démence.
Identification, synthesis and SAR of amino substituted pyrido[3,2b]pyrazinones as potent and selective PDE5 inhibitors
作者:Dafydd R. Owen、John K. Walker、E. Jon Jacobsen、John N. Freskos、Robert O. Hughes、David L. Brown、Andrew S. Bell、David G. Brown、Christopher Phillips、Brent V. Mischke、John M. Molyneaux、Yvette M. Fobian、Steve E. Heasley、Joseph B. Moon、William C. Stallings、D. Joseph Rogier、David N.A. Fox、Michael J. Palmer、Tracy Ringer、Margarita Rodriquez-Lens、Jerry W. Cubbage、Radhika M. Blevis-Bal、Alan G. Benson、Brad A. Acker、Todd M. Maddux、Michael B. Tollefson、Brian R. Bond、Alan MacInnes、Yung Yu
DOI:10.1016/j.bmcl.2009.06.012
日期:2009.8
A new class of potent and selective PDE5 inhibitors is disclosed. Guided by X-ray crystallographic data, optimization of an HTS lead led to the discovery of a series of 2-aryl, (N8)-alkyl substituted-6-aminosubstituted pyrido[3,2b]pyrazinones which show potent inhibition of the PDE5 enzyme. Synthetic details and some structure-activity relationships are also presented. (C) 2009 Elsevier Ltd. All rights reserved.