from a co-crystal structure of the azabenzimidazole-based lead 6 bound to CDK9 led to the discovery of azaindoles as highly potent and selective CDK9 inhibitors. With the goal of discovering a highly selective and potent CDK9 inhibitor administrated intravenously that would enable transient target engagement of CDK9 for the treatment of hematological malignancies, further optimization focusing on physicochemical
                                    从筛选命中2 中鉴定出的一系列氮杂
苯并咪唑的优化以及从与 CDK9 结合的基于氮杂
苯并咪唑的先导6的共晶结构中获得的信息,导致发现了氮杂
吲哚作为高效和选择性的 CDK9 
抑制剂。为了发现一种高选择性和有效的 CDK9 
抑制剂静脉给药,使 CDK9 能够瞬时靶向参与治疗血液系统恶性肿瘤,进一步优化理化和药代动力学特性导致氮杂
吲哚38和39. 这些化合物是高效和选择性的 CDK9 
抑制剂,在啮齿动物中具有较短的半衰期,适合静脉内给药的物理特性,并有可能在体内实现对 CDK9 的深刻但短暂的抑制。