1. Division of Medicinal Chemistry and Natural Products, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7568, United States
2. CNS Research, UCB Pharma S.A., Chemin du Foriest, B-1420 Braine-l’Alleud, Belgium
3. Anticonvulsant Screening Program, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 6001 Executive Boulevard, Suite 2106, Rockville, Maryland 20892, United States
4. Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, United States