1. Department of Chemistry & Biochemistry University of the Sciences 600 South 43rd Street Philadelphia PA 19104 USA
2. University of Bordeaux, CBMN (UMR 5248) Institut Européen de Chimie et Biologie 2 rue Escarpit 33600 Pessac France
3. CNRS, CBMN (UMR 5248) France
4. Bordeaux Institut National Polytechnique CBMN (UMR 5248) France
5. Servier Research Institute of Medicinal Chemistry Záhony utca 7. 1031 Budapest Hungary