Tricyclic quinoxalines as potent kinase inhibitors of PDGFR kinase, Flt3 and Kit
摘要:
Here we report on novel quinoxalines as highly potent and selective inhibitors of the type III receptor tyrosine kinases PDGFR, FLT3, and KIT. These compounds, tricyclic quinoxalines, were generated in order to improve bioavailability over the highly hydrophobic bicyclic quinoxalines. Four of the highly active compounds were characterized in detail and are shown to inhibit PDGFR kinase activity of the isolated receptor as well as in intact cells in the sub-micromolar concentration range. We show that the most active inhibitor (compound 13, AGL 2043) is similar to 15-20 times more potent than its isomer (compound 14, AGL 2044). We therefore compared the three dimensional structures of the two compounds by X-ray crystallography. These compounds are also highly effective in blocking the kinase activity of FLT3, KIT, and the oncogenic protein Tel-PDGFR in intact cells. These compounds are potent inhibitors of the proliferation of pig heart smooth muscle cells. They fully arrest the growth of these cells and the effect is fully reversible. The chemical, biochemical and cellular properties of these compounds as well as the solubility properties make them suitable for development as anti-restenosis and anti-cancer agents. (C) 2003 Elsevier Science Ltd. All rights reserved.
PDGF receptor kinase inhibitory compounds, their preparation, purification and pharmaceutical compositions including same
申请人:Yissum Research Development Company of the Hebrew University of Jerusalem
公开号:US20020028817A1
公开(公告)日:2002-03-07
A preparation of a tyrphostin including a compound of a general formula:
1
wherein, for compound I, the preparation is enriched either for R
6
at position 6 or for R
6
at position 7, or, for Compound II, the preparation is enriched either for R
6
at position 6 or for R
6
at position 8.
[EN] PDGF RECEPTOR KINASE INHIBITORY COMPOUNDS, THEIR PREPARATION, PURIFICATION AND PHARMACEUTICAL COMPOSITIONS INCLUDING SAME<br/>[FR] COMPOSES PDGF INHIBITEURS DU RECEPTEUR DE KINASE, LEUR PREPARATION ET LEUR PURIFICATION, ET COMPOSITIONS PHARMACEUTIQUES A BASE DE CEUX-CI
申请人:YISSUM RES DEV CO
公开号:WO2001034607A1
公开(公告)日:2001-05-17
A preparation of a tyrphostin including a compound of a general formula (Compound I) or (Compound II), wherein, for (Compound I), the preparation is enriched either for R6 at position 6 or for R6 at position 7, or, for (Compound II), the preparation is enriched either for R6 at position 6 or for R6 at position 8.