1. Directorate
of Drug Substance Development, Egis Pharmaceuticals Plc., P.O. Box 100, H-1475 Budapest, Hungary
2. Department
of Inorganic Chemistry, University of Pécs and MTA-PTE Research Group for Selective Chemical Syntheses, 6 Ifjúság útja, H-7624 Pécs, Hungary
3. Department
of Organic Chemistry and Technology, Budapest University of Technology and Economics, P.O. Box 91, H-1521 Budapest, Hungary