Development of 2-Thioxoquinazoline-4-one Derivatives as Dual and Selective Inhibitors of Dynamin-Related Protein 1 (Drp1) and Puromycin-Sensitive Aminopeptidase (PSA)
作者:Akiyoshi Numadate、Yusuke Mita、Yotaro Matsumoto、Shinya Fujii、Yuichi Hashimoto
DOI:10.1248/cpb.c14-00333
日期:——
An established inhibitor of dynamin-related protein 1 (Drp1), 3-(2,4-dichloro-5-methoxyphenyl)-2-thioxoquinazoline-4-one (mdivi-1), was recently reported also to show potent puromycin-sensitive aminopeptidase (PSA)-inhibitory activity. Herein, we report structural development of mdivi-1 derivatives and structure–activity relationship (SAR) analysis of the synthesized compounds, as well as the structurally related PSA-specific inhibitor 3-(2,6-diethylphenyl)quinazoline-2,4-dione (PAQ-22), with the aim of identifying key structural features for inhibitory activity in order to develop selective inhibitors of Drp1, which is a potential target for treatment of Huntington’s disease. Among the synthesized compounds, 3-(4-chloro-3-methoxyphenyl)-2-thioxoquinazoline-4-one (10g) exhibited more potent Drp1-inhibitory activity than mdivi-1 with high selectivity for Drp1 over PSA.
已知的dynamin相关蛋白1(Drp1)抑制剂——3-(2,4-二氯-5-甲氧苯基)-2-噻唑啉酮(mdivi-1),近期还被报道显示出强大的嘌呤霉素敏感性氨基肽酶(PSA)抑制活性。在此,我们报道了mdivi-1衍生物的结构开发、合成化合物的构效关系(SAR)分析,以及结构相关的PSA特异性抑制剂3-(2,6-二乙基苯基)喹唑啉-2,4-二酮(PAQ-22),旨在识别抑制活性的关键结构特征,从而开发针对Drp1的选择性抑制剂,Drp1是治疗亨廷顿病的潜在靶点。在合成化合物中,3-(4-氯-3-甲氧苯基)-2-噻唑啉酮(10g)表现出比mdivi-1更强大的Drp1抑制活性,并对Drp1显示出高度选择性优于PSA。