* Corresponding authors

^a Institute of Organic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
E-mail: bringman@chemie.uni-wuerzburg.de

^b Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University, Organization of African Unity Street 1, 11566 Cairo, Egypt

^c Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, D-10589 Berlin, Germany

^d Centre National de Floristique, Université d’Abidjan, Conservatoire et Jardin Botanique, Abidjan 08, Ivory Coast

^e Molecular Signaling & Drug Discovery Laboratory, Department of Biochemistry, Central University of Punjab, Bathinda-151401, Punjab, India