1. Institute for Pharmaceutical Chemistry, Biocenter, J. W. Goethe University Frankfurt, Marie-Curie Str. 9-11, D-60439, Frankfurt, Germany
2. Aventis Pharma Deutschland GmbH, Industriepark Höchst, 65926, Frankfurt/Main, Germany
3. Numico Research Group Germany, Friedrichsdorf/Taunus, Germany