1. MTA-SZTE Stereochemistry Research Group; University of Szeged; Dóm tér 8 Szeged 6720 Hungary
2. University of Szeged Interdisciplinary Excellence Centre Institute of Pharmaceutical Chemistry; Eötvös u. 6 Szeged 6720 Hungary).
3. Department of Organic Chemistry; University of Szeged; Dóm tér 8 Szeged 6720 Hungary