The present invention relates to modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator, compositions thereof, and methods therewith. The present invention also relates to methods of treating ABC transporter mediated diseases using such modulators.
myeloid leukemia (AML) cases and confer a poor prognosis. Optimization of the screening hit 1 from our in-house compound library led to the discovery of a series of pyrazolo[1,5-a]pyrimidine derivatives as potent and selective FLT3-ITD inhibitors. Compounds 17 and 19 displayed potent FLT3-ITD activities both with IC50 values of 0.4 nM and excellent antiproliferative activities against AML cell lines. Especially
FLT3 的内部串联重复 (FLT3-ITD) 发生在大约 25% 的所有急性髓性白血病 (AML) 病例中,并且预后不良。我们内部化合物库中筛选命中1的优化导致发现了一系列吡唑并[1,5 - a ]嘧啶衍生物作为有效和选择性的 FLT3-ITD 抑制剂。化合物17和19显示出有效的 FLT3-ITD 活性,IC 50值为 0.4 nM,并且对 AML 细胞系具有优异的抗增殖活性。特别是化合物17和19抑制了 quizartinib 的耐药性—— 赋予突变FLT3 D835Y,两者都具有0.3 nM的IC 50值。此外,蛋白质印迹分析表明化合物17和19有效抑制了 FLT3 的磷酸化并减弱了 AML 细胞中的下游信号传导。这些结果表明吡唑并[1,5 - a ]嘧啶衍生物可能是治疗AML的有前途的FLT3-ITD抑制剂。
Modulators of ATP-Binding Cassette Transporters
申请人:Vertex Pharmaceuticals Incorporated
公开号:US20130165442A1
公开(公告)日:2013-06-27
The present invention relates to modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator, compositions thereof, and methods therewith. The present invention also relates to methods of treating ABC transporter mediated diseases using such modulators.
The present invention relates to modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator, compositions thereof, and methods therewith. The present invention also relates to methods of treating ABC transporter mediated diseases using such modulators.