Synthesis and biological evaluation of 3-([1,2,4]triazolo[4,3-a]pyridin-3-yl)-4-(indol-3-yl)-maleimides as potent, selective GSK-3β inhibitors and neuroprotective agents
摘要:
A series of novel 3-([1,2,4] triazolo[4,3-a] pyridin-3-yl)-4-(indol-3-yl)-maleimides were designed, prepared and evaluated for their GSK-3 beta inhibitory activities. Most compounds showed high potency to GSK-3 beta inhibition with high selectivity. Among them, compounds 7c, 7f, 7h, 7l and 7m significantly reduced GSK-3 beta substrate Tau phosphorylation at Ser396 in primary neurons, showing the inhibition of cellular GSK-3 beta. In the in vitro neuronal injury models, compounds 7c, 7f, 7h, 7l and 7m prevented neuronal death against glutamate, oxygen-glucose deprivation and nutrient serum deprivation which are associated with cerebral ischemic stroke. In the in vivo cerebral ischemia animal model, compound 7f reduced infarct size by 15% and improved the neurological deficit following focal cerebral ischemia. These findings may provide new insights into the development of novel GSK-3b inhibitors with potential neuroprotective activity. (C) 2015 Published by Elsevier Ltd.
A series of novel 3‐(furo[2,3‐b]pyridin‐3‐yl)‐4‐(1H‐indol‐3‐yl)‐maleimides were designed, synthesized, and biologically evaluated for their GSK‐3β inhibitory activities. Most compounds showed favorable inhibitory activities against GSK‐3β protein. Among them, compounds 5n, 5o, and 5p significantly reduced GSK‐3β substrate tau phosphorylation at Ser396 in primary neurons, indicating inhibition of cellular GSK‐3β activity. In the in vitro neuronal injury models, compounds 5n, 5o, and 5p prevented neuronal death against glutamate, oxygen–glucose deprivation, and nutrient serum deprivation which are closely associated with cerebral ischemic stroke. In the in vivo cerebral ischemia animal model, compound 5o reduced infarct size by 10% and improved the neurological deficit. The results may provide new insights into the development of novel GSK‐3β inhibitors with potential neuroprotective activity against brain ischemic stroke.
Structure–Activity Relationship and Pharmacokinetic Studies of Sotrastaurin (AEB071), a Promising Novel Medicine for Prevention of Graft Rejection and Treatment of Psoriasis
作者:Jürgen Wagner、Peter von Matt、Bernard Faller、Nigel G. Cooke、Rainer Albert、Richard Sedrani、Hansjörg Wiegand、Christian Jean、Christian Beerli、Gisbert Weckbecker、Jean-Pierre Evenou、Gerhard Zenke、Sylvain Cottens
DOI:10.1021/jm200469u
日期:2011.9.8
Protein kinase C (PKC) isotypes have emerged as key targets for the blockade of early T-cell activation. Herein, we report on the structure - activity relationship and the detailed physicochemical and in vivo pharmacokinetic properties of sotrastaurin (AEB071, 1), a novel maleimide-based PKC inhibitor currently in phase II clinical trials. Most notably, the preferred uptake of sotrastaurin into lymphoid tissues is an important feature, which is likely to contribute to its in vivo efficacy.