1. Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
2. GlaxoSmithKline, Medicines Research Centre, Stevenage SG1 2NY, United Kingdom
3. Amgen, Inc., Pivotal Drug Substance Process Development, Thousand Oaks, California 91320, United States
4. Bristol-Myers Squibb, Chemical and Synthetic Development, New Brunswick, New Jersey 08903, United States
5. Eli Lilly and Company, Indianapolis, Indiana 46285, United States