1. Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia, Division of Molecular Medicine, Rudjer Boskovic Institute, Bijenička cesta 54, P.O. Box 1016, HR-10000 Zagreb, Croatia, and Department of Biochemical Engineering, Faculty of Food and Biotechnology, University of Zagreb, Pierrottieva 6, HR-10000 Zagreb, Croatia