Discovery of Acylsulfonohydrazide-Derived Inhibitors of the Lysine Acetyltransferase, KAT6A, as Potent Senescence-Inducing Anti-Cancer Agents
摘要:
A high-throughput screen designed to discover new inhibitors of histone acetyltransferase KAT6A uncovered CTX-0124143 (1), a unique aryl acylsulfonohydrazide with an IC50 of 1.0 mu M. Using this acylsulfonohydrazide as a template, we herein disclose the results of our extensive structure-activity relationship investigations, which resulted in the discovery of advanced compounds such as 55 and 80. These two compounds represent significant improvements on our recently reported prototypical lead WM-8014 (3) as they are not only equivalently potent as inhibitors of KAT6A but are less lipophilic and significantly more stable to microsomal degradation. Furthermore, during this process, we discovered a distinct structural subclass that contains key 2-fluorobenzenesulfonyl and phenylpyridine motifs, culminating in the discovery of WM-1119 (4). This compound is a highly potent KAT6A inhibitor (IC50 = 6.3 nM; K-D = 0.002 mu M), competes with Ac-CoA by binding to the Ac-CoA binding site, and has an oral bioavailability of 56% in rats.
Here we used 19F NMR fragment screening for the discovery of novel, ligand-efficient SPR inhibitors. We report the crystal structures of six chemically diverse inhibitors complexed with SPR, identifying relevant interactions and binding modes in the sepiapterin pocket. Exploration of our initial fragment screening hit led to double-digit nanomolar inhibitors of SPR with excellent ligand efficiency.
在慢性下背痛患者中的全基因组关联研究认为,Sepaapterin还原酶是开发新型镇痛药的重要目标。在这里,我们使用19 F NMR片段筛选来发现新型的,配体有效的SPR抑制剂。我们报告了与SPR配合使用的六种化学多样的抑制剂的晶体结构,确定了Sepaapterin口袋中的相关相互作用和结合模式。对我们最初的片段筛选命中的探索导致了具有出色配体效率的两位数纳摩尔SPR抑制剂。
Compounds
申请人:CTXT PTY LTD
公开号:US20220153710A1
公开(公告)日:2022-05-19
A compound of formula (I), or a pharmaceutical salt thereof: