1. Laboratory of Molecular Neurobiology, Institute of Physiological Chemistry and Pathobiochemistry, Johannes-Gutenberg University Medical School, Duesbergweg 6 55099, Mainz, Germany
2. Zentrale Forschung, Bayer AG, 51368, Leverkusen, Germany
3. Department of Pharmaceutical Chemistry, Boehringer-Ingelheim KG, 5521 6, Ingelheim/Rhein, Germany
4. Department of Pharmacology and Experimental Therapeutics, University of Maryland Medical School, Baltimore, MD, 21201, USA