1. Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Pharmaceutical Chemistry, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
2. Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Organic Chemistry II, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany