1. Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
2. Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
3. Department
of Chemistry, La Jolla Laboratories, Pfizer Inc., 10770 Science Center
Drive, San Diego, California 92121, United States