申请人:Rhone-Poulenc Rorer Pharmaceuticals, Inc.
公开号:US05476851A1
公开(公告)日:1995-12-19
This invention relates to pyrazolo[3,4-g]quinoxaline compounds exhibiting protein tyrosine kinase inhibition activity of the formula: ##STR1## where: ------ may be a double bond; R, R.sub.2, R.sub.3 and R.sub.4 are as described in claim 1; a pharmaceutically acceptable salt thereof. More specifically, compounds of this invention are novel as selective inhibitors of the PDGF-R protein tyrosine kinase and can be applied as potential therapeutic agents for various disease states which are characterized by uncontrolled cellular proliferation. Further, the present invention provides pharmaceutical compositions and a method for treating such disorders comprising the administration to a patient of a PDGF receptor inhibiting effective amount of a pyrazolo[3,4-g]quinoxaline compound exhibiting protein tyrosine kinase inhibition activity. Processes for the preparation of pyrazolo[3,4-g]quinoxaline compounds are also described.
本发明涉及一种具有蛋白酪氨酸激酶抑制活性的吡唑并[3,4-g]喹喔啉化合物,其化学式为:##STR1##其中:------可以是双键;R、R.sub.2、R.sub.3和R.sub.4如权利要求书中所述;及其药学上可接受的盐。更具体地,本发明的化合物作为PDGF-R蛋白酪氨酸激酶的选择性抑制剂是新颖的,并可作为潜在的治疗剂用于各种由细胞不受控制增殖特征的疾病状态。此外,本发明提供了含有这种化合物的药物组合物以及治疗这些疾病的方法,包括向患者施用吡唑并[3,4-g]喹喔啉化合物的蛋白酪氨酸激酶抑制活性的PDGF受体抑制有效量。还描述了制备吡唑并[3,4-g]喹喔啉化合物的方法。