1. Department of Medicinal Chemistry and Pharmacognosy and Program for Collaborative Research in the Pharmaceutical Sciences and Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood Street, Chicago, Illinois 60612, Department of Natural Science, Rosary College of Arts and Sciences, Dominican University, River Forest, Illinois 60305, and Department of Radiology, Innsbruck Medical University, Anichstrasse 35, 6020 Innsbruck, Austria