1. Handratta VD, et al. J Med Chem, 2005, 48(8), 2972-2984. 2. Vasaitis T, et al. Mol Cancer Ther, 2008, 7(8), 2348-2357. 3. Bruno RD, et al. Mol Cancer Ther, 2008, 7(9), 2828-2836. 4. Schayowitz A, et al. Mol Cancer Ther, 2008, 7(1), 121-132. 5. Schayowi