1. Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, 60612, USA
2. Chemistry and Life Sciences Division, Research Triangle Institute, Research Triangle Park, NC, 27709, USA
3. Biotechnology, The Glaxo Wellcome Medicines Research Centre, Gunnels Wood Road, Stevenage, Herts, SGI 2NY, United Kingdom
4. Department of Cell Biology, Glaxo Wellcome Inc., Research Triangle Park, NC, 27709, USA