1. Department of Medicinal Chemistry and Institute for Therapeutics Discovery and Development College of Pharmacy University of Minnesota 717 Delaware Street SE Minneapolis MN 55414 USA
2. Department of Cancer Biology Dana-Farber Cancer Institute Boston MA 02215 USA
3. Moffitt Cancer Center Drug Discovery Department 12902 Magnolia Drive Tampa Fl 33612 USA
4. Department of Chemistry University of Minnesota 207 Pleasant Street SE Minneapolis MN 55455 USA
5. Department of Medicine Harvard Medical School Boston MA 02115 USA