1. Division
of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, Pittsburgh, Pennsylvania 15282, United States
2. Department
of Pharmaceutical Sciences, University of Oklahoma College of Pharmacy, Oklahoma
City, Oklahoma 73117, United States
3. Screening
Technologies Branch, Developmental Therapeutics Program, Division
of Cancer Treatment and Diagnosis, Frederick National Laboratory for
Cancer Research, National Cancer Institute, Frederick, Maryland 21702, United States