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。
Synthesis and cytotoxic activity of novel quinazolino-β-carboline-5-one derivatives
A novel series of quinazolino-beta-carbolinone derivatives was synthesized and evaluated for their in vitro and in vivo anticancer activity. Many compounds have shown good in vitro activity in the range 1-8 muM concentration. Three of the compounds were further tested in nude mice bearing HT-29 colon cancer xenografts. (C) 2004 Elsevier Ltd. All rights reserved.
HERDEIS, CLAUS;BISSINGER, GERHARD, Z. NATURFORSCH., 42,(1987) N 6, 785-790