intervention. In this work, we adopted an open science approach to develop a series of potent type I inhibitors of ALK2 which are orally bio-available and brain-penetrant. Initial efforts resulted in the discovery of M4K2009, an analogue of the previously reported ALK2 inhibitor LDN-214117. Although highly selective for ALK2 over the TGF-βR1 receptor ALK5, M4K2009 is also moderately active against the
弥漫性桥脑神经胶质瘤是一种侵袭性小儿癌症,尚无有效的化疗药物。对这种疾病的
基因组格局的分析已导致将
丝氨酸/苏
氨酸激酶ALK2鉴定为治疗干预的潜在靶标。在这项工作中,我们采用开放式科学方法开发了一系列有效的I型ALK2
抑制剂,这些
抑制剂可口服
生物利用并具有脑渗透性。最初的努力导致发现了
M4K2009,它是先前报道的ALK2
抑制剂LDN-214117的类似物。尽管相对于TGF-βR1受体ALK5对ALK2具有高度选择性,但
M4K2009对hERG
钾通道也具有中等活性。改变三
甲氧基苯基部分的取代基产生等价的苯甲酰胺类似物
M4K2149,其对离子通道的脱靶亲和力降低。进一步的修饰产生了2-
氟-6-
甲氧基苯甲酰胺衍
生物(26a-c),其具有对ALK2的高抑制活性,优异的选择性和优异的药代动力学特征。