Bis-Heteroaryl Pyrazoles: Identification of Orally Bioavailable Inhibitors of Activin Receptor-Like Kinase-2 (R206H)
作者:Katsuhiko Sekimata、Tomohiro Sato、Naoki Sakai、Hisami Watanabe、Chiemi Mishima-Tsumagari、Tomonori Taguri、Takehisa Matsumoto、Yoshifumi Fujii、Noriko Handa、Teruki Honma、Akiko Tanaka、Mikako Shirouzu、Shigeyuki Yokoyama、Kohei Miyazono、Yoshinobu Hashizume、Hiroo Koyama
DOI:10.1248/cpb.c18-00598
日期:2019.3.1
Mutant activin receptor-like kinase-2 (ALK2) was reported to be closely associated with the pathogenesis of fibrodysplasia ossificans progressiva (FOP) and diffuse intrinsic pontine glioma (DIPG), and therefore presents an attractive target for therapeutic intervention. Through in silico virtual screenings and structure–activity relationship studies assisted by X-ray crystallographic analyses, a novel series of bis-heteroaryl pyrazole was identified as potent inhibitors of ALK2 (R206H). Derived from in silico hit compound RK-59638 (6a), compound 18p was identified as a potent inhibitor of ALK2 (R206H) with good aqueous solubility, liver microsomal stability, and oral bioavailability.
突变的激活素受体样激酶-2(ALK2)被报道与进行性骨化性纤维发育不良(FOP)和弥漫性内在性脑桥胶质瘤(DIPG)的发病机制密切相关,因此成为一个有吸引力的治疗干预靶点。通过计算机虚拟筛选和结构-活性关系研究,借助X射线晶体学分析,发现了一系列新型双杂环吡唑类化合物,这些化合物是ALK2(R206H)的强效抑制剂。从计算机筛选的先导化合物RK-59638(6a)衍生而来,化合物18p被鉴定为具有良好水溶性、肝微粒体稳定性和口服生物利用度的ALK2(R206H)强效抑制剂。