1. Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH Zürich Vladimir-Prelog-Weg 4, HCI H405 CH-8093 Zürich
2. Centro de Investigaciones BiológicasConsejo Superior de Investigaciones Científicas, C/Ramiro de Maeztu 9 ES-28040 Madrid Spain
3. Institute of Biochemistry and Molecular MedicineUniversity of Bern Bühlstrasse 28 CH-3012 Bern Switzerland
4. Departamento de Química Orgánica I, Facultad de Ciencias QuímicasUniversidad Complutense de Madrid Av. Complutense ES-28040 Madrid Spain
5. CIC bioGUNE, Asociación Centro de Investigación Cooperativa en BiocienciasBizkaia Science and Technology Park building 801A ES-48160 Derio, Bizkaia Spain
6. IkerbasqueBasque Foundation for Science Maria Diaz de Haro 3, 6 solairua ES-48013 Bilbao, Bizkaia Spain
7. Department of Organic Chemistry II, Faculty of Science & TechnologyUniversity of the Basque Country, Barrio Sarriena s/n ES-48940 Leioa, Bizkaia Spain