1. Department of Chemistry and Neuroscience, The Scripps Research Institute, 130 Scripps Way, Jupiter, Florida 33458, United States
2. Pfizer Worldwide Research and Development, Cambridge, Massachusetts 02139, United States
3. Department of Chemistry & Biochemistry, State University of New York at Fredonia, 311 Science Center, Fredonia, New York 14063, United States
4. Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States