Affiliation: | 1. Institute for Organic Chemistry, University of Duisburg‐Essen, 45117 Essen (Germany);2. Present address: Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278‐8510 (Japan);3. New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064 (India) |