1. Pharmaceutical Institute Department of Pharmaceutical & Medicinal Chemistry University of Bonn An der Immenburg 4 53121 Bonn Germany
2. Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences Flemingovo n. 2 16610 Prague Czech Republic
3. Research Group Intestinal Microbiology German Institute of Human Nutrition Potsdam-Rehbruecke Arthur-Scheunert-Allee 114–116 14558 Nuthetal Germany
4. Institute of Pharmaceutical and Biomedical Sciences (IPBS) Johannes Gutenberg University of Mainz Staudingerweg 5 55128 Mainz Germany
5. Biology Centre CAS Institute of Parasitology University of South Bohemia Faculty of Science Branišovská 1160/31 37005 České Budějovice Czech Republic