1. Division
of Medicinal Chemistry, Graduate School of Pharmaceutical Sciences, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
2. Screening
Technologies Branch, Developmental Therapeutics Program, Division
of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick
National Laboratory for Cancer Research, National Institutes of Health, Frederick, Maryland 21702, United States
3. Department of Pharmacology, Cancer Therapy & Research Center, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, Texas 78229, United States