Potent, Selective, and Orally Bioavailable Inhibitors of the Mammalian Target of Rapamycin Kinase Domain Exhibiting Single Agent Antiproliferative Activity
作者:Michael F. T. Koehler、Philippe Bergeron、Elizabeth Blackwood、Krista K. Bowman、Yung-Hsiang Chen、Gauri Deshmukh、Xiao Ding、Jennifer Epler、Kevin Lau、Leslie Lee、Lichuan Liu、Cuong Ly、Shiva Malek、Jim Nonomiya、Jason Oeh、Daniel F. Ortwine、Deepak Sampath、Steve Sideris、Lan Trinh、Tom Truong、Jiansheng Wu、Zhonghua Pei、Joseph P. Lyssikatos
DOI:10.1021/jm301389h
日期:2012.12.27
Selective inhibitors of mammalian target of rapamycin (mTOR) kinase based upon saturated heterocycles fused to a pyrimidine core were designed and synthesized. Each series produced compounds with K-i < 10 nM for the mTOR kinase and >500-fold selectivity over closely related PI3 kinases. This potency translated into strong pathway inhibition, as measured by phosphorylation of mTOR substrate proteins and antiproliferative activity in cell lines with a constitutively active PI3K pathway. Two compounds exhibiting suitable mouse PK were profiled in in vivo tumor models and were shown to suppress mTORC1 and mTORC2 signaling for over 12 h when dosed orally. Both compounds were additionally shown to suppress tumor growth in vivo in a PC3 prostate cancer model over a 14 day study.