1. Faculty of Materials Science and Applied Chemistry RigaTechnical University P. Valdena Str.3 Riga 1007 Latvia
2. Department of Chemistry Johannes Gutenberg University Mainz Duesbergweg 10–14 Mainz 55128 Germany
3. Latvian Institute of Organic Synthesis Aizkraukles Str. 21 Riga 1006 Latvia
4. Novosibirsk Institute of Organic Chemistry Academician Lavrentjev Ave. 9 Novosibirsk 630090 Russia
5. The Federal Research Center Institute of Cytology and Genetics Acad. Lavrentyev Ave., 10 Novosibirsk 630090 Russia