Discovery of Aminoquinazolines as Potent, Orally Bioavailable Inhibitors of Lck: Synthesis, SAR, and in Vivo Anti-Inflammatory Activity
作者:Erin F. DiMauro、John Newcomb、Joseph J. Nunes、Jean E. Bemis、Christina Boucher、John L. Buchanan、William H. Buckner、Victor J. Cee、Lilly Chai、Holly L. Deak、Linda F. Epstein、Ted Faust、Paul Gallant、Stephanie D. Geuns-Meyer、Anu Gore、Yan Gu、Brad Henkle、Brian L. Hodous、Faye Hsieh、Xin Huang、Joseph L. Kim、Josie H. Lee、Matthew W. Martin、Craig E. Masse、David C. McGowan、Daniela Metz、Deanna Mohn、Kurt A. Morgenstern、Antonio Oliveira-dos-Santos、Vinod F. Patel、David Powers、Paul E. Rose、Stephen Schneider、Susan A. Tomlinson、Yan-Yan Tudor、Susan M. Turci、Andrew A. Welcher、Ryan D. White、Huilin Zhao、Li Zhu、Xiaotian Zhu
DOI:10.1021/jm0605482
日期:2006.9.1
The lymphocyte-specific kinase (Lck) is a cytoplasmic tyrosine kinase of the Src family expressed in T cells and natural killer (NK) cells. Genetic evidence in both mice and humans demonstrates that Lck kinase activity is critical for signaling mediated by the T cell receptor (TCR), which leads to normal T cell development and activation. Selective inhibition of Lck is expected to offer a new therapy for the treatment of T-cell-mediated autoimmune and inflammatory disease. Screening of our kinase-preferred collection identified aminoquinazoline 1 as a potent, nonselective inhibitor of Lck and T cell proliferation. In this report, we describe the synthesis and structure-activity relationships of a series of novel aminoquinazolines possessing in vitro mechanism-based potency. Optimized, orally bioavailable compounds 32 and 47 exhibit anti-inflammatory activity (ED50 of 22 and 11 mg/kg, respectively) in the anti-CD3-induced production of interleukin-2 (IL-2) in mice.