Optimization of Imidazo[4,5-<i>b</i>]pyridine-Based Kinase Inhibitors: Identification of a Dual FLT3/Aurora Kinase Inhibitor as an Orally Bioavailable Preclinical Development Candidate for the Treatment of Acute Myeloid Leukemia
作者:Vassilios Bavetsias、Simon Crumpler、Chongbo Sun、Sian Avery、Butrus Atrash、Amir Faisal、Andrew S. Moore、Magda Kosmopoulou、Nathan Brown、Peter W. Sheldrake、Katherine Bush、Alan Henley、Gary Box、Melanie Valenti、Alexis de Haven Brandon、Florence I. Raynaud、Paul Workman、Suzanne A. Eccles、Richard Bayliss、Spiros Linardopoulos、Julian Blagg
DOI:10.1021/jm300952s
日期:2012.10.25
children with acute myeloid leukemia (AML), conferring a poor prognosis in both age groups. In an in vivo setting, 27e strongly inhibited the growth of a FLT3-ITD-positive AML human tumor xenograft (MV4–11) following oral administration, with in vivo biomarker modulation and plasma free drug exposures consistent with dual FLT3 and Aurora kinase inhibition. Compound 27e, an orally bioavailable dual FLT3 and
对基于咪唑并[4,5 - b ]吡啶的系列极光激酶抑制剂进行优化,鉴定出 6-chloro-7-(4-(4-chlorobenzyl)pirazin-1-yl)-2-(1, 3-dimethyl-1 H -pyrazol-4-yl)-3 H -imidazo[4,5- b ]pyridine ( 27e ),一种强效的 Aurora 激酶抑制剂 (Aurora-A K d = 7.5 nM, Aurora-B K d = 48 nM)、FLT3 激酶 ( K d = 6.2 nM) 和 FLT3 突变体,包括 FLT3-ITD ( K d = 38 nM) 和 FLT3(D835Y) ( K d = 14 nM)。FLT3-ITD 引起组成型 FLT3 激酶激活,在 20-35% 的成人和 15% 的急性髓性白血病 (AML) 患儿中检测到,这两个年龄组的预后都很差。在体内环境中,27e在口服给药后强烈抑制FLT3