Synthesis and Evaluation of 5-(3-(Pyrazin-2-yl)benzylidene)thiazolidine-2,4-dione Derivatives as Pan–Pim Kinases Inhibitors
作者:Jinho Lee、Jongseong Park、Victor Sukbong Hong
DOI:10.1248/cpb.c14-00325
日期:——
Pim kinases play a key role in the regulation of signaling pathways including proliferation, migration, and metabolism and are a potential target for cancer therapy. A series of 5-benzylidenethiazolidine-2,4-diones were synthesized as pim kinase inhibitors. The structure–activity relationships (SAR) of the analogues in inhibiting in vitro pim kinase activity as well as the proliferation of leukemia cell lines were examined. SAR studies indicated that a hydroxyl group at the 2-position of the benzene ring of 5-benzylidenethiazolidine-2,4-dione plays an important role in the inhibitory activity against all three pim kinases and replacement with a pyrazinyl group at the 5-position of the benzene ring of 5-benzylidenethiazolidine-2,4-dione improved activity significantly. The compounds exerted anti-proliferative activity against the three leukemia cell lines we tested. The most potent compound, 5i, had an EC50 value of 0.8 µM in the MV4-11 cell line. The result of kinase profiling indicated that compound 5i was highly selective for pim-kinases.
Pim激酶在调控包括增殖、迁移和代谢等信号通路中发挥关键作用,并且是癌症治疗的潜在靶点。一系列5-苄叉噻唑烷-2,4-二酮被合成作为pim激酶抑制剂。研究了这些类似物在体外抑制pim激酶活性和白血病细胞系增殖的结构-活性关系(SAR)。SAR研究表明,5-苄叉噻唑烷-2,4-二酮的苯环2位上的羟基在抑制所有三种pim激酶的活性中起重要作用,而将5-苄叉噻唑烷-2,4-二酮的苯环5位上的取代基替换为吡嗪基团可显著提高活性。这些化合物对我们在测试的三种白血病细胞系展现出抗增殖活性。最强的化合物5i在MV4-11细胞系中的EC50值为0.8µM。激酶谱分析结果表明,化合物5i对pim激酶具有高度选择性。