1. Institut für Chemie; Universität Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
2. Department of Pharmaceutical Chemistry, Faculty of Pharmacy; University of Benin; Benin City Nigeria
3. Al-Farabi Kazakh National University; Al-Farabi ave. 71 050040 Almaty Kazakhstan
4. Leibniz-Institut für Katalyse e. V. an der Universität Rostock; Albert-Einstein-Str. 29a 18059 Rostock Germany