1. Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck, Innrain 52c, Leopold Franzens-Universität, A-6020 Innsbruck, Austria, Institute of Pharmacy/Computer-Aided Molecular Design Group, Center for Molecular Biosciences Innsbruck, Innrain 52c, Leopold Franzens-Universität, A-6020 Innsbruck, Austria, and Institute of Organic Chemistry, Center for Molecular Biosciences Innsbruck, Innrain 52a, Leopold Franzens-Universität, A-6020 Innsbruck, Austria