Inhibitors of IkappaB kinase (IKK) have long been sought as specific regulators of NF-kappaB. A screening effort of the endogenous IKK complex allowed us to identify 5-bromo-6-methoxy-beta-carboline as a nonspecific IKK inhibitor. Optimization of this beta-carboline natural product derivative resulted in a novel class of selective IKK inhibitors with IC(50)s in the nanomolar range. In addition. we show that one of these beta-carboline analogues inhibits the phosphorylation of IkappaBalpha and subsequent activation of NF-kappaB in whole cells, as well as blocking TNF-alpha release in LPS-challenged mice. (C) 2003 Elsevier Science Ltd. All rights reserved.
Compounds of the formula I
are suitable for the production of pharmaceuticals for the prophylaxis and therapy of disorders in whose course an increased activity of IκB kinase is involved.
式I的化合物适用于生产用于预防和治疗在其过程中涉及IκB激酶活性增加的疾病的药物。
Indole, 12. Mitt. β-Carboline aus Lactonen - Zur Synthese von Liganden am Norharman-Rezeptor
作者:Jochen Lehmann、Dominique Heineke
DOI:10.1002/ardp.19943271107
日期:——
wurden in 5 Stufen aus α‐Ethoxalyl‐δ‐valerolacton (1) für Untersuchungen an Norharman‐Bindungsstellen in Rattenleber und Schweinehirn hergestellt. Die Pd‐katalysierte Aromatisierung der N‐Benzyl‐tetrahydro‐β‐carboline unter Debenzylierung wurde am Beispiel 5a→6a optimiert und dann auf andere Derivate übertragen. Zusätzliche Hydrogenolysen erfolgten bei 5d,h. Durch Bromierung von 1a erhaltenes 6d ermöglicht
作者:Alfredo C Castro、Luan C Dang、François Soucy、Louis Grenier、Hormoz Mazdiyasni、Maria Hottelet、Lana Parent、Christine Pien、Vito Palombella、Julian Adams
DOI:10.1016/s0960-894x(03)00408-6
日期:2003.7
Inhibitors of IkappaB kinase (IKK) have long been sought as specific regulators of NF-kappaB. A screening effort of the endogenous IKK complex allowed us to identify 5-bromo-6-methoxy-beta-carboline as a nonspecific IKK inhibitor. Optimization of this beta-carboline natural product derivative resulted in a novel class of selective IKK inhibitors with IC(50)s in the nanomolar range. In addition. we show that one of these beta-carboline analogues inhibits the phosphorylation of IkappaBalpha and subsequent activation of NF-kappaB in whole cells, as well as blocking TNF-alpha release in LPS-challenged mice. (C) 2003 Elsevier Science Ltd. All rights reserved.