1. Research Unit on Bioactive Molecules (RUBAM), Department of Organic and Biological Chemistry, Chemical and Environmental Research Institute of Barcelona (IIQAB-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain, Unit of Pharmaceutical Chemistry (Associated Unit to CSIC), Faculty of Pharmacy, University of Barcelona, Juan XXIII, s/n 08028, Barcelona, Spain, and BayerCropScience GmbH Chemistry Frankfurt, Industriepark Höchst, G836 Frankfurt am Main, Germany