Kim KS, Zhang L, Schmidt R, Cai ZW, Wei D, Williams DK, Lombardo LJ, Trainor GL, Xie D, Zhang Y, An Y, Sack JS, Tokarski JS, Darienzo C, Kamath A, Marathe P, Zhang Y, Lippy J, Jeyaseelan R, Wautlet B, Henley B, Gullo-Brown J, Manne V, Hunt JT, Fargnoli J, Borzilleri RM. Discovery of pyrrolopyridine-pyridone based inhibitors of Met kinase: synthesis, X-ray crystallographic analysis, and biological activities. J Med Chem. 2008 Sep 11; 51(17):5330-41.