Synthesis and evaluation of a series of 4-azaindole-containing p21-activated kinase-1 inhibitors
作者:Wendy Lee、James J. Crawford、Ignacio Aliagas、Lesley J. Murray、Suzanne Tay、Weiru Wang、Christopher E. Heise、Klaus P. Hoeflich、Hank La、Simon Mathieu、Robert Mintzer、Sreemathy Ramaswamy、Lionel Rouge、Joachim Rudolph
DOI:10.1016/j.bmcl.2016.06.031
日期:2016.8
A series of 4-azaindole-containing p21-activated kinase-1 (PAK1) inhibitors was prepared with the goal of improving physicochemical properties relative to an indole starting point. Indole 1 represented an attractive, non-basic scaffold with good PAK1 affinity and cellular potency but was compromised by high lipophilicity (c log D = 4.4). Azaindole 5 was designed as an indole surrogate with the goal
制备了一系列含有4-氮杂吲哚的p21活化激酶-1(PAK1)抑制剂,目的是相对于吲哚起点提高理化性质。吲哚1代表一种有吸引力的非碱性支架,具有良好的PAK1亲和力和细胞效力,但因高亲脂性而受到损害(c log D = 4.4)。氮杂吲哚5被设计为吲哚替代品,目的是降低log D并导致等价的PAK1抑制,细胞效力提高1倍以上。围绕5的结构-活性关系研究确定了其他具有较高PAK1生化活性的4-氮杂吲哚类似物(Ki <10 nM)和I组相比II组PAK的选择性高达24倍。与吲哚1相比,该系列化合物显示出更高的渗透性,更高的水溶性和更低的血浆蛋白结合力。理化性质的改善转化为小鼠PK研究中相对于吲哚1的氮杂吲哚5的未结合清除率降低了20倍。