1. Department of Organic ChemistryUniversity of Konstanz Universitätsstrasse 10 78464 Konstanz Germany
2. Department of Biochemical PharmacologyUniversity of Konstanz Universitätsstrasse 10 78464 Konstanz Germany
3. Department of Bioorganic ChemistryUniversity of Bayreuth Universitätsstrasse 30 95440 Bayreuth Germany
4. Department of PhysiologyUniversity of Lübeck Ratzeburger Allee 160 23562 Lübeck Germany
5. Department of ChemistryUniversity College Dublin Stillorgan Road Belfield Dublin 4 Ireland