Discovery and structure–activity relationship of 2,6-disubstituted pyrazines, potent and selective inhibitors of protein kinase CK2
作者:Nobuhiro Fuchi、Yosuke Iura、Hiroaki Kaneko、Aiko Nitta、Kazuharu Suyama、Hiroshi Ueda、Shinichi Yamaguchi、Kazumi Nishimura、Shigeo Fujii、Yumiko Sekiya、Masateru Yamada、Toshiya Takahashi
DOI:10.1016/j.bmcl.2012.05.006
日期:2012.7
We report the discovery and structure-activity relationship of 2,6-disubstituted pyrazines, which are potent and selective CK2 inhibitors. Lead compound 1 was identified, and derivatives were prepared to develop potent inhibitory activity. As a result, we obtained compound 7, which was the smallest unit that retained potency. Then, introducing an aminoalkyl group at the 6-position of the indazole ring resulted in improved efficacy in both enzymatic and cell-based CK2 inhibition assays. Moreover, compound 13 showed selectivity against other kinases and in vivo efficacy in a rat nephritis model. These results show that 2,6-disubstituted pyrazines have potential as therapeutic agents for nephritis. (C) 2012 Elsevier Ltd. All rights reserved.