Design and Activity of Specific Hypoxia-Inducible Factor-2α (HIF-2α) Inhibitors for the Treatment of Clear Cell Renal Cell Carcinoma: Discovery of Clinical Candidate (<i>S</i>)-3-((2,2-Difluoro-1-hydroxy-7-(methylsulfonyl)-2,3-dihydro-1<i>H</i>-inden-4-yl)oxy)-5-fluorobenzonitrile (PT2385)
作者:Paul M. Wehn、James P. Rizzi、Darryl D. Dixon、Jonas A. Grina、Stephen T. Schlachter、Bin Wang、Rui Xu、Hanbiao Yang、Xinlin Du、Guangzhou Han、Keshi Wang、Zhaodan Cao、Tzuling Cheng、Robert M. Czerwinski、Barry S. Goggin、Heli Huang、Megan M. Halfmann、Melissa A. Maddie、Emily L. Morton、Sarah R. Olive、Huiling Tan、Shanhai Xie、Tai Wong、John A. Josey、Eli M. Wallace
DOI:10.1021/acs.jmedchem.8b01196
日期:2018.11.8
Highlights include the use of a putative n → π*Ar interaction to guide early analog design, the conformational restriction of an essential hydroxyl moiety, and the remarkable impact of fluorination near the hydroxyl group. Evaluation of select compounds from two structural classes in a sequence of PK/PD, efficacy, PK, and metabolite profiling identified 10i (PT2385, luciferase EC50 = 27 nM) as the clinical
HIF-2α是HIF转录因子家族的成员,是透明细胞肾细胞癌(ccRCC)等癌症的关键致癌驱动因素。这些癌症的标志性特征是HIF-2α蛋白的过度积累,通常是由于E3连接酶VHL(von Hippel–Lindau)失活所致。本文中,我们公开了基于结构的药物设计(SBDD)方法,最终确定了PT2385,这是第一个进入临床试验的HIF-2α拮抗剂。亮点包括使用假定的n→π* Ar相互作用来指导早期类似物设计,基本羟基部分的构象限制以及靠近羟基的氟化作用所产生的显着影响。评估从PK / PD,功效,PK和代谢物谱分析的序列中两个结构类别中选择的化合物10i(PT2385,荧光素酶EC 50 = 27 nM)作为临床候选药物。最后,回顾性晶体学分析描述了有效拮抗所必需的结构扰动。