1. Institute of Organic Chemistry and Biochemistry, Academy of Sciences, Flemingovo
náměstí 2, 166 10 Prague, Czech Republic
2. Department
of Chemistry, Durham University, DH1 3LE Durham, United Kingdom
3. Department
of Chemistry, University of Konstanz, 78457 Konstanz, Germany
4. Theoretical Medicinal Chemistry
and Biophysics, Institute of Pharmacy, Eberhard Karls University Tübingen, Auf der Morgenstelle 8,
72076 Tübingen, Germany