person Jean Noel Evina
schoolDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonUniversity of Yaoundé ICameroonYaoundé, CameroonDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
person Dominique Serge Ngono Bikobo
*
schoolDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonUniversity of Yaoundé ICameroonYaoundé, CameroonDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonschoolDepartment Chemie, Universität Fribourg, Fribourg, SwitzerlandUniversität FribourgSwitzerlandFribourg, SwitzerlandDepartment Chemie, Universität Fribourg, Fribourg, Switzerland
person Auguste Abouem A. Zintchem
schoolDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonUniversity of Yaoundé ICameroonYaoundé, CameroonDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonschoolDepartment of Chemistry, Higher Training College, University of Yaoundé I, Yaoundé, CameroonUniversity of Yaoundé ICameroonYaoundé, CameroonDepartment of Chemistry, Higher Training College, University of Yaoundé I, Yaoundé, Cameroon
person Norbert Mbabi Nyemeck II
schoolDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonUniversity of Yaoundé ICameroonYaoundé, CameroonDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonschoolFaculty of Chemistry, Philipps-Universität Marburg, Marburg, GermanyPhilipps-Universität MarburgGermanyMarburg, GermanyFaculty of Chemistry, Philipps-Universität Marburg, Marburg, Germany
person Esther Del Florence Moni Ndedi
schoolDepartment of Microbiology, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonUniversity of Yaoundé ICameroonYaoundé, CameroonDepartment of Microbiology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
person Patrick Hervé Betote Diboué
schoolDepartment of Microbiology, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonUniversity of Yaoundé ICameroonYaoundé, CameroonDepartment of Microbiology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
person Maximilienne Ascension Nyegue
schoolDepartment of Microbiology, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonUniversity of Yaoundé ICameroonYaoundé, CameroonDepartment of Microbiology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
person Alex de Théodore Atchadé
schoolDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonUniversity of Yaoundé ICameroonYaoundé, CameroonDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
person Dieudonné Emmanuel Pegnyemb
schoolDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, CameroonUniversity of Yaoundé ICameroonYaoundé, CameroonDepartment of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
person Ulrich Koert
schoolFaculty of Chemistry, Philipps-Universität Marburg, Marburg, GermanyPhilipps-Universität MarburgGermanyMarburg, GermanyFaculty of Chemistry, Philipps-Universität Marburg, Marburg, Germany
person Christian G. Bochet
schoolDepartment Chemie, Universität Fribourg, Fribourg, SwitzerlandUniversität FribourgSwitzerlandFribourg, SwitzerlandDepartment Chemie, Universität Fribourg, Fribourg, Switzerland
Conflicts of interest
The authors declare no conflicts of interest.
Authors’ contributions
JNE (PhD student) contributed running the laboratory work, and drafted the paper; EFMN, PHBD and MAN contributed to biological studies, running the laboratory work, analysis of the data and drafted the paper; NMN contributed to analysis of the data and drafted the paper; UK, ATA, DEP and CB contributed to critical reading of the manuscript; AAZ and DSNB contributed in collecting plant samples, supervised the laboratory work, did the NMR investigations and revised the paper. All the authors have read the final manuscript and approved the submission.