Discovery of Malarial Threonyl tRNA Synthetase Inhibitors by Screening of a Focused Fragment Library
作者:Jekaterina Bolsakova、Raitis Bobrovs、Larisa Varacheva、Anastasija Rudnickiha、Iveta Kanepe、Emilio Parisini、Aigars Jirgensons
DOI:10.1021/acsmedchemlett.3c00403
日期:2024.1.11
While Plasmodium falciparum threonyl tRNA synthetase (PfThrRS) has clearly been validated as a prospective antimalarial drug target, the number of known inhbitors of this enzyme is still limited. In order to expand the chemotypes acting as inhibitors of PfThrRS, a set of fragments were designed which incorporated bioisosteres of the N-acylphosphate moiety of the aminoacyladenylate as an intermediate
虽然恶性疟原虫苏氨酰 tRNA 合成酶 ( Pf ThrRS) 已被明确验证为潜在的抗疟药物靶点,但已知的该酶抑制剂的数量仍然有限。为了扩展作为Pf ThrRS抑制剂的化学型,设计了一组片段,其掺入氨酰基腺苷酸的N-酰基磷酸部分的生物等排体作为酶促反应的中间体。通过生化测定,在 100 μM 浓度下,基于N-酰基氨基磺酸盐和N-酰基苯噻唑磺酰胺的片段9a和9k被鉴定为Pf ThrRS 的抑制剂。然后通过将这些片段与氨基嘧啶连接作为酶反应中间体中腺嘌呤的生物等排体,将它们开发成有效的Pf ThrRS 抑制剂( 10a 、 b和11 )。