1. Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
2. Department of Chemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
3. Cell Signalling Laboratory, Cancer Pharmacology Division, Indian Institute of Integrative Medicine, Jammu, India
4. Clinical Microbiology Unit, Indian Institute of Integrative Medicine, Jammu, India
5. Institute of Organic and Biomolecular Chemistry, University of Göttingen, Göttingen, Germany
6. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, Peopleʼs Republic of China