Development of Novel, Highly Potent Inhibitors of V-RAF Murine Sarcoma Viral Oncogene Homologue B1 (BRAF): Increasing Cellular Potency through Optimization of a Distal Heteroaromatic Group
作者:Bart M. J. M. Suijkerbuijk、Ion Niculescu-Duvaz、Catherine Gaulon、Harmen P. Dijkstra、Dan Niculescu-Duvaz、Delphine Ménard、Alfonso Zambon、Arnaud Nourry、Lawrence Davies、Helen A. Manne、Frank Friedlos、Lesley M. Ogilvie、Douglas Hedley、Filipa Lopes、Natasha P. U. Preece、Javier Moreno-Farre、Florence I. Raynaud、Ruth Kirk、Steven Whittaker、Richard Marais、Caroline J. Springer
DOI:10.1021/jm900607f
日期:2010.4.8
We describe the design, synthesis, and optimization of a series of new inhibitors of V-RAF murine sarcoma viral oncogene homologue B1 (BRAF), a kinase whose mutant form (V600E) is implicated in several types of cancer, with a particularly high frequency in melanoma. Our previously described inhibitors with a tripartite A−B−C system (where A is a hinge binding pyrido[4,5-b]imidazolone system, B is an
我们描述了一系列新型V-RAF鼠肉瘤病毒癌基因同源物B1(BRAF)抑制剂的设计,合成和优化,该激酶的突变体形式(V600E)与几种类型的癌症有关,发生频率特别高在黑色素瘤中。我们先前所述的具有三方A-B-C系统的抑制剂(其中A是铰链结合吡啶并[4,5- b ]咪唑啉酮系统,B是芳基间隔基团,C是杂芳族基团)对纯化的V600E有效体外进行BRAF,但在伴随的细胞测定中效力较弱。本文评估将不同的芳族杂环取代为基于苯基的C环,作为提高这些抑制剂细胞效价的潜在手段。取代的吡唑,尤其是3-叔丁基-丁基-1-芳基-1 H-吡唑类可增加细胞效能,而对分离的V600E BRAF的效能无不利影响。因此,已经合成了以低纳摩尔浓度抑制V600E BRAF,其在细胞中的下游信号传导的化合物(如通过细胞外调节激酶(ERK)磷酸化的减少来测量)以及突变型BRAF依赖性细胞的增殖。伴随的好处是良好的口服生物利用度和体内高血浆浓度。