1. Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
2. Present address: Department of Chemical BiologyMax Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
3. Present address: Department of ChemistryDiamond Harbour Women's University Sarisha South 24 Parganas West Bengal 743368 India
4. Department of ChemistryThe Scripps Research Institute 130 Scripps Way Jupiter FL 33458 USA
5. Bio-Functional Chemistry (UMR 7199)LabEx Medalis, University of Strasbourg 74 Route du Rhin 67400 Illkirch-Graffenstaden France
6. Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO)Université de StrasbourgCNRS, IPHC UMR 7178 67000 Strasbourg France