1. Center for Drug Discovery, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon
2. Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, Canada
3. Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
4. Department of Chemistry, University of Buea, Buea, Cameroon
5. Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine, University of Tübingen, 72076 Tübingen, Germany
6. Institute of Pharmaceutical Sciences, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
7. DIFACQUIM Research Group, Department of Pharmacy, School of Chemistry, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Mexico City 04510, Mexico
8. Institute of Pharmacy, Martin-Luther University Halle-Wittenberg, Halle (Saale), Germany